sharpening and focus-stacking
TRANSCRIPT
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SHARPENING and FOCUS-STACKING
SHARPENING
and
FOCUS-STACKING
A QUICK
PHOTOSHOP GUIDE
Paul Sauter
August 2013
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SHARPENING
POST-PROCESSING
SHARPENING
sharpening is often necessary,
especially for RAW capture
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SHARPENING
POST-PROCESSING
SHARPENING
• examples from Photoshop CS5
• different methods, e.g.
• Unsharp Mask
• High Pass
• or others e.g. Smart Sharpen
(not shown here)
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SHARPENING
REMEMBER
• do Sharpening last!
• be especially careful if you
need to change resolution
through Image>Image Size. It
is usually better to do the
sharpening afterwards.
• zoom to 50% or 100%
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SHARPENING
UNSHARP MASK
steps:
1. make a Duplicate Layer
2. right-hand click on the
Duplicate Layer and “Convert
to Smart Object”
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SHARPENING
1:
2:
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SHARPENING
3. Filter>
Sharpen>
Unsharp
Mask
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SHARPENING
UNSHARP MASK
4. Unsharp Mask menu: • tick “Preview” to preview on the main image;
• work the sliders:
• Amount: level of Contrast (50-150 or more)
• Radius: area of contrast (0.5-1 or 2)
• Threshold: amount of tonal range before
becoming an edge (0-1)
• all books and websites give you
different recommendations, so try it out!
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SHARPENING
SHARPENING
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SHARPENING
UNSHARP MASK
• If you (or the judge!) can see the
sharpening, you’ve gone too far!
• see on the next image, the white
borders at a radius of 3.1
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SHARPENING
SHARPENING
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SHARPENING
• as a “Smart
Object”, you can
go back to the
Unsharp Mask
filter and readjust
the sliders at any
time
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SHARPENING
after
before
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SHARPENING
SHARPENING
• Other Method
• High Pass filter
• easier, only one slider
• works only on the edges of the
image, not so affected by noise
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SHARPENING
1. create
Duplicate
Layer and
Smart Object;
2. Filter>Other>
High Pass
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SHARPENING
HIGH PASS FILTER
3. High Pass menu: • tick “Preview” to preview on the main image;
• work the slider:
• Radius: area of contrast (try 2-5 or higher)
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SHARPENING
HIGH PASS FILTER
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SHARPENING
4. change the blend
mode to “Overlay”
• or “Soft Light” or
“Hard Light” to
change the
sharpening
• ready!
• use the Smart
Object to change
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FOCUS STACKING
FOCUS STACKING
• to create a large Depth of Field
• for e.g. Macro or Landscapes
• where a small aperture still is
not enough to get everything in
focus
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FOCUS STACKING
FOCUS STACKING
STEPS:
• take a number of shots, with
e.g. f8, stepwise focussing from
near to far
• 5 to 10 shots or more
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FOCUS STACKING
far-focus
near-focus
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FOCUS STACKING
Photoshop steps:
1. Open files to
be stacked
2. File>Automate
>Photomerge • or highlight in Bridge
and
Tools>Photoshop>
Photomerge
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FOCUS STACKING
3. “Add Open Files”
4. Layout – Auto
5. Untick “Blend
Images Together”
6. OK, wait a little…
this creates a new
File:
Untitled_Panorama1
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FOCUS STACKING
7. On the Layers palette
for this file: Select all
the Layers
8. then: Edit>
Auto-Blend Layers
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FOCUS STACKING
9. use the
default
values
10.OK
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FOCUS STACKING
11.the layers are being
stacked…….
12.Layer>Flatten
Image
13.File>Save as….
to save your new
file with a new
name
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FOCUS STACKING
voila, your image sharp from front to back!
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ELEMENTS
ELEMENTS
on my (old) version of Elements
I can use:
• Enhance>Unsharp Mask….
• Filter>Other>High Pass….
• but sorry, no Focus Stacking…
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GOOD LUCK!
Paul Sauter