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