Download - All about colour - by Stefano Virgilli
ALL ABOUT COLOUR
by Stefano Virgilli, Adobe Design Master @ LAB School
SO, WHAT IS COLOUR?
SO, WHAT IS COLOUR?
R
SO, WHAT IS COLOUR?
RG
SO, WHAT IS COLOUR?
RGB
SO, WHAT IS COLOUR?
R CGB
SO, WHAT IS COLOUR?
R CG MB
SO, WHAT IS COLOUR?
R CG MB Y
SO, WHAT IS COLOUR?
R CG MB Y
R+G=Y
R CG MB Y
G+B=C
R CG MB Y
R+B=M
R CG MB Y
R CG MB Y
SO, WHAT IS COLOUR?
IS COLOUR ALWAYS GOOD?
IS COLOUR ALWAYS GOOD?
WHO LIKES THIS PICTURE?
WHO LIKES THIS PICTURE?
BUT WHY!?
THE SCIENCE OF PHOTOGRAPHY
OUR BRAIN PROCESSES PICTURES STARTING FROM
THE CONTRAST.
DULL.
BETTER.
THEN OUR BRAINPROCESSES THE COLOUR.
COLOURCAST
THE VIRUS
A colour cast is a tint of a particular colour, usually unwanted, which affects the whole of a photographic image evenly.
COLOURCAST
IS THIS COLOUR CAST?
IS THIS COLOUR CAST?
NO!
WE ARE AIMING FOR NEUTRAL TONES.
IS THIS COLOUR CAST?
IS THIS COLOUR CAST?
YES!
THE DISK SHOULD BE WHITE... OR GREY.
SO, HOW ABOUT THIS...
BLUE?!LET’S LOOK AGAIN.
WHAT COLOUR IS SUPPOSED TO BE THE SKY?
WHAT COLOUR IS SUPPOSED TO BE THE LAKE?
...AND THE MOUNTAINS FAR AWAY?
BLUE.
THAT IS NOT COLOUR CAST!
LOOK CLOSER.
CLOSER.
CLOSER.
WHAT COLOUR IS THE SNOW SUPPOSED TO BE.
WHAT COLOUR IS THE SNOW SUPPOSED TO BE.
OUR RGB GOAL IS 128/128/128
OUR RGB GOAL IS 128/128/128
JUST 256 DIVIDED BY 2
++
+-+
SO, WHAT WE SAID ABOUT RED + BLUE?
R+B=M
R CG MB Y
IF VIRUS IS MAGENTAWHAT IS THE CURE?
R+B=M
R CG MB Y
GREEN IS THE MEDICINE FOR MAGENTA
R CG MB Y
IF PICTURES ARE OUR
PATIENTS...
...WE ARE
DOCTORS
NOT DOCTOR BROWN
DR. VIRGILLI
DR. VIRGILLI
DR.V
PATIENT MS. SNOWHITEWHAT COLOUR CAST IS THIS?
IS IT RED?
OR PERHAPS BLUEISH?
PATIENT MR. GREYSTREETWHAT COLOUR CAST IS THIS?
IS IT GREY?
OR A BIT GREENISH?
PATIENT MR. HYPOCHONDRIACWHAT COLOUR CAST IS THIS?
OH, REALLY?
OUT OF MY CLINIC, YOU
ARE NOT SICK!
PATIENT MR. TOUGHWHAT COLOUR CAST IS THIS?
WHERE IS NEUTRAL?
HERE IT IS!
WELL DOCTORS.
WHAT’S NEXT?
PRACTICEPRACTICEPRACTICE
DR.Vfavourite method
‘s
Photoshop’s
LEVELS
Choose the channels individually ‘s
Photoshop’s
LEVELS
Use the middle slider (gamma) to adjust the colour cast
‘s+ RED + CYAN
Photoshop’s
LEVELS
Use the middle slider (gamma) to adjust the colour cast
‘s+ GREEN + MAGENTA
Photoshop’s
LEVELS
Use the middle slider (gamma) to adjust the colour cast
‘s+ BLUE + YELLOW
Credits:http://www.flickr.com/photos/universalproject/73949276/sizes/l/in/photostream/Some rights reserved by Universal Project
http://www.flickr.com/photos/jujuly25/370986806/sizes/m/in/photostream/Some rights reserved by jujuly25
Links:http://creativecrew.org.sgCreative Crew (Singapore) - Adobe User Group
http://lab.edu.sgAdobe Authorized Training Centre Singapore
http://www.virgilli.comStefano Virgilli’s website
