education guide 2003
TRANSCRIPT
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A GUIDE TO LIGHTING IN EDUCATION 3
Types of Light 3
Floods 3
Soft Spots 3
Profile Spots 3
Beamlights 3
CHOOSING LIGHTING POSITIONS 4
Lighting from the front 4
Lighting from the back and side 4
Finding the compromise 5
SPECIALS 6
For the Actor 6
For Special Effects 6
For the Scenery 6
DIVIDING THE STAGE 7
Dividing by Area 7
Area planning for a play 7
Area planning for a musical 7
Colour planning for a play 7
Colour planning for a musical 8
THE DECISION PROCESS 9
Example plan for a play 9
Example plan for In the Round 9Example plan for a musical 9
DECIDING WHICH LIGHTS TO USE 10
THE RIG PLAN 11
LISTS 11
FOCUSING 12
Focussing in comfort 12
What can we adjust? 12
GLOSSARY 17
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A GUIDE TO LIGHTING IN EDUCATIONWhatever the scale of a production - amateur or professional - lighting like other design processes is based on a sequence of logical
decisions plus a good measure of creative inspiration.
This brief guide offers a sequence of step-by-step decisions to form the basis of a lighting process for the smaller scale production. It
has been prepared by a lighting designer with experience of working on productions of all types and sizes. Strand hope that it will be
especially helpful to amateur groups, small touring companies and educational theatre.
Types of Light
How do we choose which type to use in each position? As Strands lighting equipment is so robust choice is further complicated, in that in
addition to the range in today's catalogue, many earlier models are still in use. However lighting instruments group into families and it isconvenient to consider our requirements in terms of what each family offers in terms of beam size, beam shape, and beam quality.
Floods
The beam size, shape and quality emitted by a flood is fixed: there are no adjusting knobs. The light is therefore suitable for lighting skies
and cloths. It is not selective enough for lighting actors. Coda units may be single or grouped in 3s or 4s for colour mixing. They have a
reflector that is specially designed to ensure an even wash over a large area from a short throw
Soft Spots
Prism Convex (PC) spots allow control of the beam size, and the beam may be roughly shaped by a rotatable barndoor. The quality is even
and soft-edged, with less light-spill outside the main beam than in the case of a fresnel. In addition to the PCs, Fresnels have a very soft
edge. The beam angle is adjustable and its shape roughly containable by a 4-leaf rotatable barndoor. The extent of the spill outside the
main beam makes them unsuitable for longer throws, particularly from the auditorium.
Profile Spots
Profile spots give precise control of the beam. An iris diaphragm (for round edges) and shutters (for hard edges) can produce shapes in allsizes. For more complex shapes, special masks can be cut. Edge quality can be adjusted from very soft to very hard by moving the lens,
while a metal pattern plate called a gobo can texture the quality of the whole beam. The number in the profile's name indicates the beam
angle.
Whereas standard profile spots have a fixed beam angle, which is narrowed by shuttering, variable beam profiles use a pair of lenses whosedifferential movement gives a wide range of beam angles and edge qualities. The shutters are then only required for shaping. Adjustments
are faster and more efficient use is made of the lamp's output The number in a variable profile's name indicates the range of available
angles.
The SL New Generation Profile Spots now provide increased light output with reduced power consumption. Often referred to as a
coolbeam profile, they do this by using state of the art optical coating on a glass reflector, allowing the optical light to be passed forward,
while the heat and infra red spectrum is allowed out of the rear.
Beamlights
Most lighting instruments produce a conical beam so that the spread widens as the throw increases. Beamlights use a parabolic reflector
(and no lens) to produce a near parallel beam which is more intense than a lens spotlight of the same wattage. This is one of the moreimportant developments of the past decade. The optics are fully contained within the glass envelope of the lamp. Various Lamps providing
angles of a squashed near-parallel beam are available. The intensity produces a depth-enhancing haze in the air, so intense that it is
effective even with deep colours. The basis of most rock lighting today.
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CHOOSING
LIGHTING
POSITIONS
Lighting from the frontConsider the effect of a light starting
as a vertical downlight on an actor thenmoving in a frontal plane until its beam
becomes horizontal and then carries onto light from below. How visible will be
the actor's face, particularly eyes and
teeth? To what extent will face and
body be modelled or flattened? What
area of stage will be selected and what
will be the size and direction of
shadows cast on floor and scenery?
A vertical beam is the most selective
light possible. The lit area of stage,
and the shadow cast upon it, need be no
wider than the widest part of the actor.
However, the actor's eyes will be blackpools and a highlighted nose will shade
the mouth.
If the light comes from a little forward
of the actor, it will start to reach the
eyes and mouth (provided that shekeeps her chin up and is not defeated
by a hat brim!). However, the lit area,
and shadow cast, starts to extend
upstage from the actor - i.e. the light is
slightly less selective.
As the lighting comes increasingly from
the front, the actor's eyes and teethreceive more light. But the area lit
extends further and further upstage,reducing the selectivity and increasingthe likelihood of the actor's shadow
hitting the scenery
As the light becomes more and more
frontal, the actor's features become
flattened (and so also does three-
dimensional scenery). The lit area andthe actor's shadows increase until,
when the light is horizontal, there is a
lit corridor for the entire depth of thestage, and the actor shadows become
actor length.
Light from below projects an actor
shadow that looms above the actor
rising and falling as she moves towards
and away from the light source. Whenthis is the only lighting angle, the
effect on the face is not at all natural.
But a little from below, usually just
reflected light can help to soften the
harshness of light from above.
Lighting from the back
and side
Now consider a light from behind.
Then a light or lights from a series of
side angles (i.e. lights at right anglesto those considered above). Once again
the criteria is visibility, modelling,
selectivity and shadows.
A light source behind the actor does
not illuminate the face, but it helps togive depth to the stage by separating
the action from the scenery through
creating a haze and highlighting headand shoulders. The shadow of the
actor is cast forward, helping theselection of areas. Since the light does
not fall on the face, strong colours can
be used.
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If the light comes from a little to one
side of the actor it will start to reach
the eyes and mouth on that side. The
area lit, and the shadows cast, willextend along the stage floor on the
other side.
Add a second light source from the
other side, and both sides of the face
will receive light. However, there is
now a second shadow and the selected
area of stage floor extends to both
sides of the actor.
As the side lighting comes from an
increasingly lower angle, the shadows
will lengthen to both sides of the actor
and a larger corridor will be selected
across the stage. As the light hits the
face from a lower angle, it will light
more into the eyes and teeth, although
there will still be a tendency towards a
central dark line where the beams meet
down the centre of the face.
As the angle lowers, sidelight has anincreasingly modelling effect on the
actor's face and body. This is
particularly important in dance. When
the light becomes horizontal there will
be a lighting corridor across the whole
stage. By focusing just clear of the
floor, it is possible to lose shadows into
the wings, and the light will only be
apparent when an actor stands in it.
Finding the compromise
We normally seek to light an actor for
maximum visibility and maximum
modelling, with minimum shadow.
Additionally in many productions, we
need to select as tight an area as
possible. Which combination of angles
offers the optimum compromise?
The basic compromise that has long
been the standard approach is a pair of
beams crossing on to the actor (one for
each side of the face) from positions
that are both forward and to the sideof the actor. The suggested angle isoften around 45 degrees in both
directions - i.e. midway between
vertical and horizontal and midway
between front and side. However to
restrict the shadows cast and to give a
better 'join', the lights are often
positioned closer to the vertical and tothe centre.
A backlight added to the basic crossed
pair brings depth to the scene and
generally enhances the 'look' of theactor. The backlight can be used for
strong atmospheric colour if required,while the crossed pair maintain a more
natural tint on the actor's skin tones.
Note: The actor is now It by three
beams with a 120 separation between
them.
The problem with 'crossed pair' lighting
(with or without a backlight) is the
extent of the spread of light on floor
and scenery beyond the area where the
actor's head is lit (remember that headis usually about five feet above the
floor). Although a single beam can be
flat it can also be quite tight.
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Adding a backlight can enhance this
flatness quite considerably - and the
selectivity is still a tightly controlled
upstage/downstage corridor withoutside spillage.
For modelling, sidelights can be added
and, although they will spread the lit
area, they can be at quite steep angles
since they do not need to make a major
contribution to visibility. Note: Four
beams now light the actor with a 90separation between them
.
SPECIALSThe major proportion of a stage lighting rig is focused to form a palette of areas and colours whose various combinations will provide the
desired fluidity of selectivity and atmosphere. However there are certain lights whose function is so 'special' that they cannot make asignificant contribution when mixing the basic palette.
For the Actor
Specials usually consist of spotlights set so tightly that the spaces they light cannot be considered as areas. They are often for momentswhen an actor has to be picked' out (perhaps only head and shoulders) on an otherwise blacked-out stage. They need to be listed in a
priority order for close scrutiny and reduction to essentials.
For Special Effects
There may be a request for equipment to produce clouds, flames, water, lightning, etc. When listing it is always prudent to remember that
such effects can draw attention away from the actor rather than positively support a performance. And if the effect is essential, then the
effect of light reflected from fire or water is often more telling than a pictorial representation of the actual fire or water
For the Scenery
The proportion of the rig focused on the scenery will be very small. With the exception of skies and back or front cloths, scenery normally
gets sufficient general wash from the reflected light bouncing off the stage floor from the lights that have been set for the actors.Indeed, as discussed in the following pages, many of the basic problems of lighting design arise from difficulties in stopping actor light
hitting directly on the scenery Successful lighting of scenery depends on augmenting the diffuse reflected general light by selective
highlighting of chosen scenic elements, or parts of these elements. This can vary from bold gashes to soft emphasis. Again, to be listed
and reduced to essentials after a debate based on priorities and available resources.
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DIVIDING THE STAGE
Dividing by Area
Once decisions have been made about the kind of contribution
that we expect lighting to make to the production that we are
planning - and these contributions have been put into some sort
of order of priority - we need to break down the stage area into
the segments over which we require independent selectivecontrol. The required breakdown may be symmetrical, in which
case the stage plan will be divided into something that resembles
a series of areas of different sizes corresponding to the placing
of the action. Of course it could well be that there is no need
for division into what it is useful to call production areas: all thestage may be in use all the time. In this case a simple division
into centre and sides will allow balancing for maximum
'enhancement' of the look of the scene.
Note: Adjoining areas overlap - both side to side and back to
front. And remember to remember that these are areas wherean actor's head is to be lit - they ore unlikely to be the some asthe light patterns on the floor
Area planning for a play
In this naturalistic play -possibly but not necessarily in a box set
-the areas are determined to a considerable extent by the
positions of furniture and doors. And the lighting is expected
to make some logic in terms of practical light fittings (table
lamps, wall brackets, etc.) and the natural sunshine and moonlight
coming through windows (including those in the audience's
'fourth wall'). In this particular example, we have a play where
it is desirable to focus attention at various times on the sofa,
the armchair, the table (with that essential tool of modern
drama, a telephone) and the doors. These doors aretremendously important in any drama: some of the key
appearances and speeches are made there. But for a longintimate scene on the sofa, it is useful to concentrate on that
sofa and loose peripheral areas like the doors. Consider the
seven areas shown here in terms of possible combinations: thearea palette gives the director a wide range of selectivity of
audience vision - whether a subconscious fluidity (slow cues thatare not obvious) or an area selection obviously linked to the
switching of the practical lamps
Area planning for a musical
Musicals tend to have many scenes and many selective andatmospheric light changes within these scenes. Therefore,
unless there are many - very many - lights available, the
breakdown into areas has to be very general. In this example
the breakdown is symmetrical because, as in so many musical
productions, the settings consist of a symmetrical series of
wings leading to a backcloth, possibly a skycloth. With the
addition of cloths and scenic pieces, the method of staging gives
a flexible masked acting area with the possibility of sufficientopen space for dancing and lots of entrances for a large chorus
to get on and off quickly In most musicals the big moments are
staged in the downstage areas: to help both musical balance and
the 'putting across' of numbers to the audience. For the same
reasons, much of the essential action takes place centre stage.
The most common selective lighting cue is to 'concentrate
centre', usually downstage centre, by 'losing the edges'. Thissuggests a minimum of three areas across the stage - certainly
at the front of the stage, and probably also midstage. However,
it is often quite practical to consider the whole width of the rearof the stage as one area. This provides a seven area
combination that offers an area palette giving the directorconsiderable selectivity with the possibility of progressive
tightening from back to front and from sides to middle.
Colour planning for a play
In a naturalistic play, colour is often used to create a fluid
atmosphere that can shift from warm cheerfulness to cool
sadness. If an area is lit with some lights in warm tones and
some in cools, the dimmers of the control board can be used to
achieve a whole series of options from an extreme of the warm
colour alone, through the neutrality of both together, to the
other extreme of cool colour alone. Which (if any) of the areas
need to have this kind of 'double cover' of colour tones? In this
example, discussion with the director has established that such a
colour palette seems necessary around the central areas and the
desk, whereas the upstage corners and downstage right can
manage on a warm tint only - although perhaps one that is a little
closer to a compromise neutral than the warms in the mixableareas. In such a naturalistic production the actual colour tints
chosen are likely to be quite subtle.
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Colour planning for a musical
The dialogue scenes of a musical require the subtle colour tones
that are appropriate for a naturalistic play However, the musical
numbers, particularly when solo singers can be given isolating
visibility from tightly focused follow spots, usually call for
strongly atmospheric colouring. And many dance sequences,
where the body is relatively more expressive than the face,
respond well to positive use of quite strong colour This example
shows a much used technique where the colour is applied in
rather broader washes than the areas selected for scene
location. The front half of the stage is divided into three areas,
each lit from above in rather saturated colours: a hot and coldrather than a warm and cool. The rear half is treated as one
area, also with a hot and cold from above. From the side comesfurther washes, probably in slightly less saturated hues. These
may divide the stage into bands: in this case an upstage band and
a downstage band, possibly splitting the stage into left and right
but just as likely covering the full width. With relatively neutral
colour from the front, saturated colours from above andintermediate colours from the side, we have a colour palette that
offers considerable scope.
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THE DECISION PROCESSSo how does one decide where to put the spotlights? On many
stages and in many auditoria there is not much choice: but, tomake the best use of the positions available, it is necessary to
start from an ideal and compromise that ideal to fit reality. By
WHERE, we mean where to put the light and where to point it.Traditional advice involves a lot of crossing of light beams -
partly to help model/sculpture the actor by introducing apartially side-light angle and partly because lighting diagonally
across a stage provides a bigger spread of light from each lamp:an important bonus when equipment is in short supply. Crossing
the beams opens out the area lit but can cast excessive shadows
on side wall or masking. And so, with spotlights becoming
increasingly versatile as to beam width, there is every reason to
consider using the traditionally discredited method of lighting
the actor with light coming straight in from the front. Of course
if this is the only light, yes it will be flat. (And if the available
positions are so low that an actor shadow will be thrown on to
the sky, then better to come diagonally - priorities again!) But
with the addition of some backlight (even if it is nearly vertical)
and some sidelight, the front-lit actors will come alive and the
areas/ shadows brought more under control. There need not be
precise side lighting for every area: it can often be quite generalsince it is frequently more important in the big wide areas than
in smaller tighter areas (more important, that is, in priorityterms!).
In the examples shown here, the traditional crossing method has
been used for the play, while the actors in the musical are lit'
flat frontal'. But it could be vice versa. Whichever way, the next
stage in the planning is to establish where the lights go and
where they point.
Example plan for a play
For each area of our play we need two lights. One for each side
of the actors' faces. When an area requires a full colour control
of cool and warm, the number will double to four spots - a
crossed pair in warm and a pair in cool. A spot bar immediately
behind the proscenium arch will give a suitable angle for lighting
the upstage areas, but for the downstage areas a position in the
auditorium is necessary Red and blue have been used to indicatewarm and cool filters in the spots. Green indicates more neutral
washes that have been added from back and sides. Not enough
equipment? Well, do we really need all these areas? And so many
of them with both warm and cool? (Back to priorities?) Or rather
than a pair, we could use a single straight in - but if so, we must
make it really straight in because a single crossing beam does not
do much for the other side of the face!
Example plan for In the Round
For staging in the round, light needs to come from all sides. Andit should be evenly balanced to avoid favouring one segment of
audience to an extent that is not really permissible in a staging
form so democratic as theatre-in-the-round. To avoid hitting
into audience eyes, light has to come from both within the acting
area and from outside it. Angles can be closer to the vertical
than in other forms of staging because the audience is closer to
the actors and thus visibility is 'easier'.
Example plan for a musical
In this musical the actors' visibility light is provided by spots in
a neutral colour hitting straight in. The front areas are coveredfrom the auditorium, the midstage areas from a bar just insidethe proscenium, and the upstage areas from a midstage bar If
the stage is very wide, two or more lamps may be required for
each area as indicated. Strong colour comes from near verticalbacklights and medium colour from the wings (on stands, booms
or ladder-frames to be discussed under 'rigging).
Note: For clarity these plans only include actor lights. The play
would require light outside the window and on the door backings,while the musical is likely to need a colour mix for the backcloth
and possibly specials for elements of scener
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DECIDING WHICH LIGHTS TO
USEDeciding which instrument to use obviously depends to a large
extent on what is available - meaning another exercise in listing
priorities. For 'foh' (front of house) throws of any distance inthe auditorium, profiles are essential, both to avoid undesirable
lighting up of the auditorium from scatter light, and to allow
sufficiently precise control of the beam to prevent spillage on to
the proscenium. However in a small hall there is a lot of merit in
considering fresnels or PCs (well barndoored) at close range
when a lot of spread is possible from a few lamps. For onstage
use, Fresnels and PCs come into their own with fast-to-set softedges - profiles are the most versatile instruments but they
inevitably take longer to focus. For backlight, fresnels andbeamlights are favourite, while floods are to be thought of only
for wide expanses of scenery. (Use for actor light only in
situations of extreme desperation). For theatre-in-the-round,barndoored fresnels give the required smoothness and spread.
Existing installations in most theatres and halls are likely to bebased on fresnels and profiles: anyone buying new equipment
should look seriously at including a goodly proportion of the new
generation PCs giving smooth soft-edge beams without stray
scatter light and at the versatility of the variable beam profiles.
This plan shows instruments being allocated to our play in a very
orthodox way: profiles for the front-of-house and fresnels for
onstage. If a couple of PCs were available, they would be a
useful alternative on the ends of the stage spot bar: this is a
position where any scatter light shows up badly on the side walls
of the set. Whether 500 or 1000W units are required will
depend mainly on length of throw, perhaps with the changeover
around 6 to 8 metres. However, it is important always toremember that the actual level of light intensity is not so
important as the BALANCE.
Fresnels have been allocated everywhere because they have a
good smooth spread (profile edges can be very difficult in small
theatres in the round). Every spot must have a barndoor to
contain spill from the audience eyes. Each become a pair of
spots since this is the only way that it is possible to light fully to
the sides of the acting area.
Too many-spots? Then perhaps just one cover in a neutral shade
(thereby halving the number on the plan) and utilising a couple of
pairs of straight downlighters to add colour toning in warm orcool.
The actor face lights are profiles from the front and fresnels
onstage, with the second bar being less powerful units - face
light is rarely important upstage in a musical. The backlights are
fresnels, although parcans would be nice if available. For the
sidelighting, profiles have been used downstage to contain the
light in a tight corridor across the front - often advisable when
front cloths or running tabs are in use. Midstage sidelighting use
fresnels for a good spread, while the optional upstage sidelight
again uses profiles to keep the light clear of the skycloth.
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THE RIG PLANTHE PLAN is the kernel of any lighting design. It shows, at
minimum:
1. The POSITION of each light.
2. The TYPE of light in each position.
3. Any ACCESSORIES, such as barndoors or gobo, required by
any particular light.
4. The DIMMER that will control each light.
The plan should be drawn to scale (1" to I ' or 1:25). This helpsaccurate indication of light positions. And if scale symbols are
used for these lights, there is a check on space problems: if it
can be drawn on the plan, there will be room for it on the stage.
Any shapes may be used to indicate lights, but plans are more
easily read if the symbol resembles the outline shape of the
light. Either way, the plan should certainly include a key showing
the type of lighting instrument represented by each symbol.
Colour and dimmer are indicated by number: the usual convention
is to write the colour number inside the symbol and the dimmer
number alongside the symbol.
Lights fixed to horizontal bars are easy to show in plan: the bar
can be drawn in the position that it will occupy over the stageand its height indicated by a note (such as + 14') written at the
end of the bar. Lights fixed to vertical bars, or stacked on a
series of brackets, are more difficult to draw - they must be
indicated diagrammatically FOH lights in the auditorium are
usually drawn much closer to the stage than their scaled real
distance which would make the plan inconveniently large. The
easiest method is to work on tracing paper over a ground plan of
the scenery and stage.
A good procedure is:
1. Establish all lighting positions with Xs
2. Convert these Xs to symbols of available (and/or acquirable)
lighting instrument types, drawing them pointing in the
approximate direction of proposed light travel.
3. Write colour numbers inside symbols.
4. Add dimmer numbers alongside symbols.
5. Trace through key features of the set and stage - it is
usually possible to trace through (in spaces clear of lighting
drawing) enough to relate the positions of lights to the
geography of the setting and stage.
This will bring the plan to a point where it can be used to prepare
and rig the equipment. The lighting designer's own copy will grow
many extra markings to indicate precisely where the lights are
to be pointed - markings so detailed that they would only confuseif included on all copies of the plan.
LISTSFrom the plan, lists are prepared of the required number of:
1. Types Of Light
2. Lengths Of Cable
3. Accessories
4. Colour Filters
5. Section Drawings
Will there be borders to mask the lights (and other things)
hanging above the stage? If so, draw a section to check that all
the light beams will be able to reach all desired parts of the
actors and the scenery. Usually (but not always) the heights of
the borders and lighting bars can be adjusted. Only a sectionwill determine what these relative heights should be, and only a
section will determine how effective the masking arrangementswill be for an audience eye in the front row.
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FOCUSINGFocusing is probably the most important part of the whole
lighting operation. Not even the most sophisticated marvel of amicroprocessor control desk can fill in that dark spot where the
lights have not been properly overlapped. Nor can a hard edge
be softened or a disturbing spill on to a border be shuttered off.Focusing involves tricky ladder work so that there is every
incentive to get it right first time - although, inevitably, it willbe necessary to get at the odd spotlight between rehearsals for
a little fine adjustment.
Focussing in comfort
If you stand with your back to the light that you are focusing,
(I) You will avoid being blinded (2) You will be able to see what
the actor's light is doing to the scenery
No clear shadow of
head, therefore
head is not lit.
Clear shadow of
head, therefore
head is lit
If the lighting
designer is shorter
than the actor,make an allowance -
check by raising
hand
What can we adjust?
ON ALL LIGHTS
Left/Right & Up/Down
ON SOFT SPOTS
Bigger/Smaller
with optional Barndoor Rough shaping (& control of
spill)
ON PROFILE SPOTS
Round size by optional Iris
Shaped size by Shutters
Texture by optional Gobo
Beam edge quality by Lens and on Variable Beam Profile
Spots
Size and edge quality by differential movement of two
Lenses
Shape by Shutters
The most difficult types of light are the basic Profile Spots
since there is an interaction between shutters (or iris) and lens
movement. Although adjusting the lens is principally a means of
making the edge of the beam harder or softer, it will also change
the size. Therefore it is usually necessary to adjust shuttersand lens alternately to get the desired combination of size and
edge quality
Most profiles have an adjustment whereby the light can be
adjusted so that it is either smooth across the whole spread of
the beam, or 'peaked' to be brighter in the middle with the
amount of light falling off towards the edge. For most purposes
it is easier to light with an even brightness across the beam andso it is recommended that anyone beginning to work with light
should use an even beam until through experience they discover aneed for a 'peaky' beam.
SOFT SPOT
VARIABLE ANGLE PROFILE SPOT
FIXED ANGLE PROFILE SPOT
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CONTROL CONSOLE RANGE
Manual Control ConsolesCat No Description Price
61107 LX Desk, 6 Channel, 1 Pre-set (ACT 6D) 100.00
61313 100 series 12/24 manual console 230v 220.00
AccessoriesCat No Description Price
61315 Vinyl Cover 100 Series 37.0066083 XLR5 DMX Control Cable 2m 33.00
66081 XLR5 DMX Control Cable 10m 50.00
66082 XLR5 DMX Control Cable 25m 83.00
66084 XLR5 DMX Control Socket Box 48.00
66085 XLR5 DMX Control Plug Box 25.50
66086 DMX Loop through Socket Box 23.50
66091 8 pin DIN 6 way Analogue Control Cable 5m 37.00
66092 8 pin DIN 6 way Analogue Control Cable 25m 60.00
Memory/Manual Control ConsolesCat No Description Price
64313 200 series 12/24 advanced manual console 230v 420.00
64321 200 series 24/48 advanced manual console 230v 650.00
AccessoriesCat No Description Price
64315 Vinyl Cover 200 Series 12/24 37.00
64325 Vinyl Cover 200 Series 24/48 37.00
64326 Compact Flash Card for 200 Series LibraryStorage
68.60
66083 XLR5 DMX Control Cable 2m 33.00
66081 XLR5 DMX Control Cable 10m 50.00
66082 XLR5 DMX Control Cable 25m 83.00
66084 XLR5 DMX Control Socket Box 48.00
66085 XLR5 DMX Control Plug Box 25.50
66086 DMX Loop through Socket Box 23.50
DMX Backup UnitsCat No Description Price
91713 301 Back up control system 230v 958.00
AccessoriesCat No Description Price
61315 Vinyl Cover 100 Series 37.00
66083 XLR5 DMX Control Cable 2m 33.00
66081 XLR5 DMX Control Cable 10m 50.00
66082 XLR5 DMX Control Cable 25m 83.00
66084 XLR5 DMX Control Socket Box 48.00
66085 XLR5 DMX Control Plug Box 25.50
66086 DMX Loop through Socket Box 23.50
Demux UnitsCat No Description Price
65011 72 way Rack Mountounting Digital to Analogue
Converter
295.00
66098 25 Pin D type Connector wired with 3 metres cableto bare ends
29.95
300 Series Manual/Memory ConsolesCat No Description Price
91701 300 Console, 24/48 manual/memory 50 Channel,Tracker, Communiqu & Reporter
3,208.00
91702 300 Console, 48/96 manual/memory 100 channel,Tracker, Communiqu & Reporter
4,100.00
300 Series Memory ConsolesCat No Description Price
91712 300 Console, Entry Level 50 channel , 24 submaster, Tracker, Communiqu & Reporter (no Mouse)
2,967.00
91703 300 Console, 125 channel, 24 submaster, Tracker,Networker, Communiqu & Reporter
3,610.00
91704 300 Console, 250 channel, 24 submaster, Tracker,Networker, Communiqu & Reporter
4,800.00
91705 300 Console, 400 channel, 24 subs, with 2 TFT,Tracker, Networker, Communiqu & Reporter
9,000.00
91706 300 Console, 600 channel, 24 subs, with 2 TFT,Tracker, Networker, Communiqu & Reporter
11,067.00
91707 300 Console, 600 channel, 120 submaster, Tracker,Networker, Communiqu & Reporter
9,992.00
Backup/Show Controller UnitsCat No Description Price
91708 310 showcontroller, 125 channel, Tracker,Networker, Communiqu & Reporter
2,850.00
91709 310 showcontroller, 250 channel, Tracker,Networker, Communiqu & Reporter
4,100.00
91710 310 showcontroller, 400 channel, Tracker,Networker, Communiqu & Reporter
5,600.00
91711 310 showcontroller, 600 channel, Tracker,Networker, Communiqu & Reporter
7,600.00
91713 301 Back up control system 230v 958.00
AccessoriesCat No Description Price
66013 15inch Colour Monitor 198.00
66083 XLR5 DMX Control Cable 2m 33.00
66081 XLR5 DMX Control Cable 10m 50.00
66082 XLR5 DMX Control Cable 25m 83.00
66084 XLR5 DMX Control Socket Box 48.00
66085 XLR5 DMX Control Plug Box 25.50
66086 DMX Loop through Socket Box 23.50
66129 Wired R120 Remote Control for 300/500 Consoles 1,123.00
66211 Mini UK Alpha Keyboard for 300/500 Consoles 215.00
66300 300 Console fader module complete (no software) 992.00
66301 300 Console TFT display module 1,650.00
66303 300 Console SMPTE/Midi Card 289.00
66304 300 Console VGA/LCD card 237.00
66305 300 Console Ethernet card 237.00
66306 300 Console blank module 211.00
SoftwareCat No Description Price
67313 GeniusPro PC Software P.O.A
67511 GeniusPro 50 Channel Extension Software 716.00
67513 GeniusPro 200 Channel Extension Software 2,863.00
67514 GeniusPro 500 Channel Extension Software P.O.A
67515 CommuniquPro Application Software P.O.A
67521 Server Application Software P.O.A
67523 Tracker Application Software P.O.A
67527 Networker Application Software P.O.A
67530 300 Series Submaster Module Software Upgrade 416.00
67531 Wireless Remote PDA Application Software 980.00
DIGITAL DIMMER RANGE
Digital Act 6 Installation DimmersCat No Description Price
75420 Digital Act 6 Rack Hard Wired version 440.0075421 Digital Act 6 Rack with dual 15A Sockets 475.00
75422 Digital Act 6 Rack with dual Schuko Sockets 470.00
75423 Digital Act 6 Rack with dual 16A CEE17 Sockets 480.00
SD6 Rack Portable DimmersCat No Description Price
75400 SD6 Rack Hard Wired (terminal strip) 413.00
75401 SD6 Rack Single 15A Sockets 450.00
75402 SD6 Rack Single Schuko Sockets 455.00
75403 SD6 Rack Single CEE 17 Sockets 470.00
LD90 Digital Installation Dimmers
Cat No Description Price
74102 LD90 Rack, 24 X 2500w Dimmers Single PoleMCB's
3,325.00
74103 LD90 Rack, 12 X 5000w Dimmers Sing le Pole MCB's 3,819.00
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AccessoriesCat No Description Price
76310 Optional RCD for LD90 Power Block 305.00
76311 LD90 Analogue Connectors (2) 28.00
76312 LD90 16mm Cable Termination Kit 96.00
76313 LD90 Three Phase Linking Kit 55.00
76314 LD90 Wall Mounting Bracket 55.00
76102 SWC Hand Held, programming unit 915.00
CONNECTORS AND CABLES
Socket BoxesCat No Description Price
SB04/15A 4 way 15A Socket box, 100mm deep wired toterminals, including back box.
59.70
SB06/15A 6 way by Single 15A Socket box, 100mm deep wiredto terminals, including back box.
81.40
SB12/15A 12 way by Single 15A Socket box, 100mm deepwired to terminals, including back box.
147.60
Patch PanelsCat No Description Price
CP12/15A 12 Way Cord Patch Panel Unit 157.50
CP18/15A 18 Way Cord Patch Panel Unit 219.50
CP36/15A 36 Way Cord Patch Panel Unit 389.00
Mains Extension CablesCat No Description Price
TRS05/15A 15A Extension cable 5m 14.00
TRS10/15A 15A Extension cable 10m 16.00
TRS20/15A 15A Extension cable 20m 22.00
TRS05/16A 16A Extension cable 5m 25.50
TRS10/16A 16A Extension cable 10m 29.00
TRS20/16A 16A Extension cable 20m 36.00
ConnectorsCat No Description Price
3561301 15A 3 pin rubberclad plugtop for TheatricalExtension Cables
3.47
3561206 15A 3 pin rubberclad socket for Theatrical
Luminaires and Extension Cables
5.24
91116 16A CEE17 (BS4343) pin plugtop (for Video Lights) 4.65
91113 16A CEE17 (BS4343) 3 pin cable socket (for VideoLights)
6.40
CONSUMABLES
LampsCat No Description Price
41184 T18 500w 240v GY9.5 base Lamp for use withQuartet, Prelude
12.93
41264 T26 650W 240v GY9.5 base Lamp for use with
Quartet, Prelude
12.93
41294 T29 1200w 240v GX9.5 base Lamp for use with
Cantata
16.50
43784 GKV 600W 240v Lamp for use with SL 15.60
43134 DXX 800W 240v R7s base Lamp for use withRedhead
6.83
43204 P2/20 1000W 240v R7s base Lamp for use withIadi
6.51
43274 P2/27 2000W 240v RX7s base Lamp for use with
Blonde
26.87
43824 CP82 500w 240v GY9.5 base Lamp for use withQuartet, Prelude
9.70
43894 CP89 650W 240v GY9.5 base Lamp for use withBambino 560
16.90
43404 CP40 1000W 240v G22 base Lamp for use withPolaris, Bambino 1000, Studio 1000
13.00
44014 K1 500w 240v R7s base Lamp for use with Coda,Nocturne
5.58
44044 K4 1000W 240v R7s base Lamp for use with Coda,Nocturne
10.00
Filter and GobosCat No Description Price
STP001 Colour Filter Pack of 12 sheets 60.00
STP002 Gobo Starter Pack of 10 gobos for Quartet
Profiles
60.00
STP003 Gobo Starter Pack of 10 gobos for SL Profiles 60.00
RIGGING
Stands and Brackets
Cat No Description Price
81005 Spartan Stand (suitable for Video Lights) 49.95
82030 19mm Spigot to 10mm thread 8.50
82041 Cross Bar with 29mm Spigot and 4 x 10mm holes 40.00
81030 Folding Cast Base Stand (Suitable for TheatreSpots)
94.00
81015 3m Double Extension Stand (Goliath) 226.00
Internally Wired BarsCat No Description Price
IWB0404/15A Internally Wired Bar 4m x 4 way 155.58
IWB0406/15A Internally Wired Bar 4m x 6 way 178.20
IWB0506/15A Internally Wired Bar 5m x 6 way 206.70
IWB0606/15A Internally Wired Bar 6m x 6 way 193.90
IWB0608/15A Internally Wired Bar 6m x 8 way 232.80IWB0610/15A Internally Wired Bar 6m x 10 way 301.91
IWB0806/15A Internally Wired Bar 8m x 6 way 252.39
IWB0808/15A Internally Wired Bar 8m x 8 way 296.48
IWB0810/15A Internally Wired Bar 8m x 10 way 340.59
IWB1008/15A Internally Wired Bar 10m x 8 way 314.72
IWB1010/15A Internally Wired Bar 10m x 10 way 359.66
IWB1012/15A Internally Wired Bar 10m x 12 way 404.46
Mounting AccessoriesCat No Description Price
CFS001 Ceiling Fixing Saddle 3.18
UBC001 Universal Bracket 3.60
M12/300 300mm x 12mm Threaded rod c/w 4 no M12 nuts 1.95
THEATRICAL LUMINAIRE RANGEQuartet 650w Fresnel & Prism ConvexCat No Description Price
11160/15A Quartet F 650w, 240v with f itted 15amp Plugtop 108.00
11170/15A Quartet PC 650w, 240v with fitted 15amp Plugtop 114.00
AccessoriesCat No Description Price
18040 Barndoor Quartet, 4 Leaf 26.00
18043 Colour Frame, Quartet, 150mm, Card P.O.A
18044 Colour Frame, Quartet, 150mm, Metal 10.00
41264 T26 650W 240v GY9.5 base Lamp for use with
Quartet, Prelude
12.93
82000 Safety Cable, Max Load 16kG 9.00
82010/Z Hook Clamp, 48mm, M10 (Zinc) 2.95Quartet 650w ProfilesCat No Description Price
11180/15A Quartet 15/25 650w, 240v with fitted 15ampPlugtop
202.00
11190/15A Quartet 22/40 650w, 240v with fitted 15ampPlugtop
202.00
AccessoriesCat No Description Price
18041 Iris Diaphragm, Quartet, 12 Leaf 49.50
18042 Gobo Holder, Quartet, M Size 15.00
18043 Colour Frame, Quartet, 150mm, Card P.O.A
18044 Colour Frame, Quartet, 150mm, Metal 10.00
82000 Safety Cable, Max Load 16kG 9.00
82010/Z Hook Clamp, 48mm, M10 (Zinc) 2.95
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SL 600w Variable Angle ZoomCat No Description Price
11410/15A SL 15/32 degrees 600w, 240v with fitted 15ampPlugtop
380.00
11420/15A SL 22/50 degrees 600w, 240v with fitted 15ampPlugtop
380.00
AccessoriesCat No Description Price
18049 SL Iris (24 leaf) 88.0018045 Gobo Holder SL Profiles, B Size 8.00
18114 Colour Frame, for all SL's except SL5 and SL10 10.00
18136 Colour Frame (SL5) 20.00
18137 Colour Frame (SL10) 18.00
43784 GKV 600W 240v Lamp for use with SL 15.60
82000 Safety Cable, Max Load 16kG 9.00
82010/Z Hook Clamp, 48mm, M10 (Zinc) 2.95
Cantata 1000/1200w Fresnel & Prism ConvexCat No Description Price
12030/15A Cantata F 1200w, 240v with fitted 15amp Plugtop 209.00
12040/15A Cantata PC 1200w, 240v with fitted 15amp Plugtop 226.00
Accessories
Cat No Description Price
18106 Cantata 4-leaf rotating Barndoor 42.00
18104 Colour Frame, Cantata, 185mm 13.00
41294 T29 1200w 240v GX9.5 base Lamp for use with
Cantata
16.50
82000 Safety Cable, Max Load 16kG 9.00
82010/Z Hook Clamp, 48mm, M10 (Zinc) 2.95
Coda 500/1000w Cyclorama FloodlightsCat No Description Price
14010/15A Coda One 500w, 240v with fitted 15amp Plugtop 122.00
14020/15A Coda 1000w, 240v with fitted 15amp Plugtop 160.00
14030 Coda Three 500w, 240v (terminal blocks) 310.00
14040 Coda Four 500w, 240v (terminal blocks) 370.00
AccessoriesCat No Description Price
18123 Colour Frame, Coda 500w, 215X240mm 21.00
18124 Colour Frame, Coda 1000w, 285X240mm 21.00
18125 Colour Frame, Outrig, Coda 1000w 103.00
18121 Barndoor, Coda 500w 63.00
18122 Barndoor, Coda 1000w 68.00
44014 K1 500w 240v R7s base Lamp for use with Coda,Nocturne
5.58
44044 K4 1000W 240v R7s base Lamp for use with Coda,Nocturne
10.00
83100 CBL Gland, Coda 3 & 4 Cyc P.O.A
82010/Z Hook Clamp, 48mm, M10 (Zinc) 2.95
82000 Safety Cable, Max Load 16kG 9.00
Nocturne 500/1000w Symmetrical FloodlightsCat No Description Price
14100/15A Nocturne 500w, 240v with fitted 15amp Plugtop 122.00
14110/15A Nocturne 1000w, 240v fitted 15amp Plugtop 160.00
Accessories
Cat No Description Price
18123 Colour Frame, Coda 500w, 215X240mm 21.00
18124 Colour Frame, Coda 1000w, 285X240mm 21.00
18125 Colour Frame, Outrig, Coda 1000w 103.00
18121 Barndoor, Coda 500w 63.00
18122 Barndoor, Coda 1000w 68.00
41264 T26 650W 240v GY9.5 base Lamp for use withQuartet, Prelude
12.93
82010/Z Hook Clamp, 48mm, M10 (Zinc) 2.95
82000 Safety Cable, Max Load 16kG 9.00
STUDIO LUMINAIRE RANGE
Bambino 300/500w FresnelCat No Description Price
27620 Bambino 500w Compact Fresnel, Manual (suppliedwith barndoor, colour frame and stirrup)
240.00
AccessoriesCat No Description Price
28301 Scrim Set No.1 , EU, 110mm (HMI 200w, Bambino500w) 37.00
28081 Cone 30-70mm, Base 110mm, (HMI 200w, Bambino500w) EU
37.00
28040 4 leaf Barndoor, 110mm (HMI 200w, Bambino500w)
34.00
28080 Colour Frame, 110mm, (HMI 200w, Bambino 500w)EU
11.00
43824 CP82 500w 240v GY9.5 base Lamp for use withQuartet, Prelude
9.70
82603 Large Gaffer Grip 16mm Spigot 63.00
Bambino 650w FresnelCat No Description Price
27630 Bambino 650W Compact Fresnel, Manual (supplied
with barndoor, colour frame and stirrup)
260.00
AccessoriesCat No Description Price
28309 Scrim Set No.9, EU, 170mm (HMI 400w, PAR200w, Bambino 650W)
42.00
28049 Cone 35-100mm, Base 170mm (HMI 400w, PAR200w, Bambino 650W)
48.00
28048 4 leaf Barndoor, 170mm (HMI 400w, PAR 200w,
Bambino 650W)
42.00
28047 Colour Frame, 170mm (HMI 400w, Bambino 650W) 19.00
43894 CP89 650W 240v GY9.5 base Lamp for use withBambino 560
16.90
82603 Large Gaffer Grip 16mm Spigot 63.00
Bambino 1000w Fresnel
Cat No Description Price
27640 Bambino 1000w Compact Fresnel, Manual (suppliedwith barndoor, colour frame and stirrup)
375.00
AccessoriesCat No Description Price
28844 Scrim Set EU, 186mm (HMI 575w, Bambino 1000w) 48.00
28849 Colour Frame, 186mm (HMI 575w, Bambino 1000w) 25.00
28846 4 leaf Barndoor, 186mm (HMI 575w, Bambino1000w)
48.00
28840 Cone, Small, Base 186mm (Bambino 1000w) 35.00
43404 CP40 1000W 240v G22 base Lamp for use withPolaris, Bambino 1000, Studio 1000
13.00
82002 Safety Cable, Max Load 50kG 23.00
82012 Hook Clamp, TV, 48mm, 29mm Skt 30.00
PORTABLE LIGHTING KITSTungsten
Cat No Description Price
27334 Redhead 3 Kit 920.00
27344 Redhead 4 Kit 1,189.00
23024 Double Blonde Kit 1,039.00
Daylight
Cat No Description Price
27521 PAR 200w Kit (includes: head, barndoor, extension
cable, complete with set of lenses and ballast)
2,270.00
27541 PAR 575w Kit (includes: head, barndoor, extension
cable, complete with set of lenses and ballast)
4,090.00
27021 HMI Fresnel 200w Kit ( inc ludes: head, colour
frame, ballast, barndoor, stirrup and extensioncable)
1,875.00
27031 HMI Fresnel 400w Kit (includes: head, colourframe, ballast, barndoor, stirrup and extensioncable)
2,595.00
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LOCATION LIGHTING RANGE
Iadi Fill & Cyc FloodlightsCat No Description Price
26020 Iadi Fill, 1000w, with 4-metre cable to bare ends,inline switch, supplied with integral wire guard and
barndoor
179.00
26030 Iadi Cyc, 1000w, with 4 metre cable to bare ends,
inline switch, supplied with integral wire guard and
barndoor
202.00
AccessoriesCat No Description Price
28003 Reflectors Iadi, (4) #N/A
28004 Scrim, Iadi, Full Double 34.00
28005 Scrim, Iadi, Full Single 34.00
28006 Dichroic Filter, Iadi, Daylight #N/A
28007 Diffuser, Iadi, Opal Glass #N/A
28008 Wire Mesh, Iadi, 3mm 30.00
43204 P2/20 1000W 240v R7s base Lamp for use with
Iadi
6.51
Redhead 800/1000w
Cat No Description Price
27157 Redhead 800W, inc. barndoor & safety mesh 200.00
27158 Redhead 1000W, inc. barndoor & safety mesh 240.00
AccessoriesCat No Description Price
28302 Scrim Set No.2, Redhead, 195mm 49.00
28021 Accessory Holder, Redhead 37.00
28022 Barndoor, Redhead, 4 leaf 37.00
28023 W/guard 3mm, Redhead, 165mm 17.00
28024 Safety Glass, Redhead, 165mm 20.00
28025 Dichroic Filter, Redhead, 165mm 83.00
28352 Scrim Set 5 Piece, Redhead, 195mm 36.00
43134 DXX 800W 240v R7s base Lamp for use withRedhead
6.83
82602 Small Gaffa Grip, with 16mm Spigot 32.00
Blonde 2000wCat No Description Price
21100 Blonde 2000w, inc. barndoor, accessory holder &safety mesh
293.00
AccessoriesCat No Description Price
28304 Scrim Set No.4, EU, 260mm (HMI 1200w, Bambino2000w, Studio 1000w)
63.00
28050 4 leaf Barndoor, 250mm (HMI 1200w, Bambino2000w, Studio 1000w)
53.00
28051 Wire Guard 3mm, Blonde, 252mm 32.00
28052 Wire Guard 12mm, Blonde, 252mm 17.00
28053 Safety Glass, Blonde, 252mm 42.00
28054 3152/185 Dichroic Filter Mount 156.00
28060 Flightcase, Blonde, 1 Head P.O.A43274 P2/27 2000W 240v RX7s base Lamp for use with
Blonde
26.87
82603 Large Gaffer Grip 16mm Spigot 63.00
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GLOSSARYBacklight Light coming from behind
scenery or actors to sculpt andseparate them from their
background.
Bar Horizontal metal tube of
scaffolding diameter for hanging
lights (pipe in America)
Barndoor Four-shutter
rotatable device which slides intothe front runners of fresnel and PC
focus spots to shape the beam and
reduce stray scatter light.
Battens Lengths of overhead lightingfloods arranged in 3 or 4 circuits
for colour mixing.
Beam angle Angle of the cone oflight produced by a spotlight.
Beamlight Lensless spotlightwith parabolic reflector giving
intense parallel beam
Board Contraction of switchboard or
dimmerboard. The central control
point for the stage lighting.
Boom Vertical pole, usually of
scaffolding diameter, for mounting
spotlights.
Boom arm Bracket for fixing
spotlights to a boom.
Build An increase in light intensity.
Channel A control circuit, identified by
number, from the 'board' to a light.
Channel access The method (levers,
pushes, keyboard, etc) in a memory
system by which individual channels
are brought under operator control.
Check Decrease in light intensity.
Colour call A listing of all the
colour filters required in eachlighting instrument.
Colour temperature A method
of measuring (in Kelvin units) the
spectral content of 'white' light.
Control Surface Any device such as
lever, push, wheel, rocker, mouse,
pen, cursor, etc, used as an
interface between an operator's
fingers and a processing system
which activates dimmers or motors
controlling lighting instruments.
Cross-fade Lighting changewhere some of the channelsincrease in intensity while other
channels decrease.
Cue The signal that initiates a
change of any kind. Lighting cue is achange involving light intensity
alterations.
Cyclorama Plain cloth extending
around and above the stage to give a
feeling of infinite space. Term is
often rather loosely used for any
blue skycloth, either straight or
with a limited curve at the ends.
Dead (1) The plotted height of a
piece of suspended scenery or bar
of lights. (2) Discarded items of
scenery.
Dichroic Colour filters which work byreflecting unwanted parts of the
spectrum rather than absorbingthem in the manner of traditionalfilters.
Diffuser A filter, often called a frost,
which softens a light beam,
particularly its edge.
Dimmer Device which controls the
amount of electricity passed to a
light and therefore the intensity of
that light's brightness.
Directional diffuser A filter
which not only softens the beam but
spreads it along a chosen axis. Alsoknown as a silk
Director Has the ultimate
responsibility for the interpretation
of the script through control of the
actors and supporting production
team.
Discharge lamps Special high powered
light sources whose use is normally
restricted to follow spots and
projection because of difficulties in
remote dimming by electrical means.
includes C.S.I., C.I.D. and H.M.1lamps.
Downstage The part of the
stage nearest to the audience.
Ellipsoidal Strictly a type of
reflector used in many profile spotsbut extended in North America to
cover all profile spots.
Flood Simple instrument giving fixed
spread of light.
Flys Area above the stage into
which scenery can be lifted out ofsight of the audience.
Focusing Strictly speaking, the
adjustment of lights to give a
clearly defined image; but usually
used to cover the whole process ofadjusting the direction and beam of
spotlights in which the desired
image may be anything but clearlydefined.
FOH All instruments which are
'front of house', i.e. on the audience
side of the proscenium.
Follow spot Spotlight with which an
operator follows actors around the
stage.
Fresnel spot Spotlight with softedges due to fresnel lens which has
a stepped moulding on the front anda textured surface on the back.
Frost A diffuser filter used to
soften a light beam.
FUF Full-up-finish. An increase to
bright light over the last couple ofbars of a musical number.
Gate The optical centre of a profile
spot where the shutters are
positioned and where an iris or gobocan be inserted.
GAUZO Fabric which becomes
transparent or solid under
appropriate lighting conditions.
Gobo A mask placed in the gate of aprofile spotlight for simple outline
projection. Also used, withsoftened focus, to texture the
beam.
Groundrow A low piece of
scenery standing on the stage floor.Also lengths of lighting placed on
the stage floor.
Group A subdivision, temporary or
permanent, of the channels in a
control system.
Hook clamp A clamp for fixing an
instrument to a horizontal bar,usually of scaffolding diameter.
Houselights The decorative
lighting in the auditorium.
Instrument A stage lighting unit,
such as a spotlight or flood. An
American term coming into
increasing international use.
Iris An adjustable circular
diaphragm to alter the gate size in aprofile spot. Also the muscle-
operated diaphragm in the humaneye which adjusts the eye's
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aperture to changing light
intensities.
Kilowatt see wattage
Ladder Framework in the shape of a
ladder for hanging side lighting.
Lamps The light source within an
instrument, but sometimes used asan alternative to the word
instrument.
Lantern A lighting unit designed or
adapted for stage use. A traditional
word now being overtaken by'instrument'.
Linear flood A flood using a long
thin double-ended halogen lamp,
allowing the reflector to bedesigned for an increased beam
spread.
Load The lights controlled by an
individual dimmer and limited by the
rating of that dimmer.
Master A lever or push which
overrides (or 'masters') a completepreset, or group within a preset or
selected memory.
Memory Lighting control systems
where channel intensities for eachcue are filed automatically in an
electronic store.
Multiplexing Passing controlinstructions, particularly to dimmers
or remotely focusable lights, by
sending all information in digital
format along a single pair of
screened wires.
Pan Horizontal (left/right) movement of
an instrument.
Parcan The simple instrument whichholds a par Imp and therefore does
not require any optical system oflenses or reflectors.
Par Imp A sealed beam lamp with thefilament contained within the same
glass envelope as an optical system
producing a near parallel beam.
Patching A sort of central 'telephone
exchange' where channels can be
connected to dimmers and/or
dimmers connected to socket
outlets.
P. C. [Plano convex] lens A lens
with one flat surface and onecurved surface. This 'PC' lens and
the fresnel lens are the alternativesnormally used in stage spotlights.
Pipe endsSpotlights on the ends of
lighting bars, crosslighting to model
dancer's bodies.
Playback The part of a
memory system where memorised
lighting states are recalled to
control the light on stage via master
levers or pushes.
Practical Light fitting which is
not merely decorative but is wired
to light up.
Preset Anything which is positioned in
advance of its being required --such
as props placed on the stage before
the performance. A control system
where each channel has more thanone lever to allow intensity levels to
be set (i.e. preset) in advance of acue.
Profile Spot A spotlight whichprojects the outline (i.e. the profile)
of any chosen shape and with any
desired degree of
hardness/softness.
Profiled Cue Lighting change
where the rates of increasing and
decreasing intensities accelerate or
decelerate during the progress of
the change.
Rating The maximum and minimum
power in kilowatts that can be
controlled by a circuit or dimmerchannel.
Record Plotting a cue state by filing it
in the electronic data storage of a
memory board.
Resistance dimmerAn older mechanical
form of dimmer which reduces the
flow of electricity to a light by
progressively converting the surplus
into heat.
Rigger's control A remote portable
hand-held control unit which allows
channels or groups to be switched
from the stage for focusing when
the control room is unmanned.
Scatter Low intensity light castoutside the main beam of an
instrument.
Scrollers Colour changer where a roll of
filters are taped together and
positioned by a very fast motor
activated by digital signals from a
control system which includes a
memory facility.
Shin Busters Low level lights at
stage floor level, used mainly for
dance.
Sightlines Lines drawn on plan
and section to indicate limits of
audience vision from extreme seats,
including side seats, front and back
rows, and seats in galleries.
Silks Diffusion filters which
stretch the light in a chosen
direction.
Spigot An adapter screwed to the
hanging bolt of an instrument to
enable it to be mounted on a floor
stand.
Spill stray or scatter light outside
the main beam.
SpotlightAn instrument giving control
of the angle of the emerging light
beam and therefore of the size of
area lit.
Strobe Device giving a fast series ofvery short light flashes under which
action appears to be frozen.
Theatre- in-the- Round A form of
staging where the audience totally
encircle the acting area.
Throw Distance between a light and
the actor or object being lit.
Thrust Form of stage which projectsinto the auditorium so that the
audience are seated on at least twosides.
TiltVertical (up/down) movement of an
instrument.
Tungsten lamps Older type of lamps
(the stage types are high wattageversions of standard domestic
lamps) whose tungsten filaments
gradually lose the brightness of
their light output.
Tungsten halogen lamps Newer lamps
(now virtually standard inprofessional theatre) which maintain
their initial brightness of light
output throughout life.
Upstage The part of the stage
furthest from the audience.
UV Ultra violet light (from which
harmful radiation have been filtered
out) used to light specially treated
materials which fluoresce in an
otherwise blackened stage.
Variable bean profile Profile
spotlight using a type of zoom (q.v.)arrangement where the differential
movement of two lens allows widevariations in both beam size and
quality.
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Wattage The power of consumption of a
lamp, or the maximum available
power from a dimmer. A kilowatt is
1,000 watts.
Ways The number of channels in a
control system.
Zoom A differential movement of
two lenses in an optical system. In a
simple zoom, the lenses are moved
independently, but in more complex
forms a single movement alters thesize of the beam while the image
remains in constant focus. Used in
advanced profile spots and scene
projectors.
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Strand Lighting Limited Unit 3 Hammersmith Studios 55a Yeldham Road London SW6 8JFTel: +44 (0)20 8735 9790 Fax +44 (0)20 8735 9799