all about colour - by stefano virgilli
DESCRIPTION
Stefano Virgilli - Adobe Certified Instructor Design Master @LAB School - will guide you in a deep retrospective of colour evolution. Where did we start from in digital photography, we are we heading to it. Any feedback? Being a doctor who "cures" photos Histogram, Levels, Curves, Colour Balance, Channel Mixer, Exposure, Recovery, FIll Light, Blacks, Brightness, Contrast, Temperature… Isn't this enough? Or too much? It's a jungle out there! Before to embark in a long journey with Camera Raw and Lightroom, do you really understand WHY are you using this or that adjustment? RESET! Start from the beginning and analyze what's right and what's wrong with a picture. Only then we can try to "fix it".TRANSCRIPT
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ALL ABOUT COLOUR
by Stefano Virgilli, Adobe Design Master @ LAB School
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SO, WHAT IS COLOUR?
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SO, WHAT IS COLOUR?
R
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SO, WHAT IS COLOUR?
RG
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SO, WHAT IS COLOUR?
RGB
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SO, WHAT IS COLOUR?
R CGB
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SO, WHAT IS COLOUR?
R CG MB
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SO, WHAT IS COLOUR?
R CG MB Y
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SO, WHAT IS COLOUR?
R CG MB Y
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R+G=Y
R CG MB Y
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G+B=C
R CG MB Y
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R+B=M
R CG MB Y
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R CG MB Y
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SO, WHAT IS COLOUR?
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IS COLOUR ALWAYS GOOD?
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IS COLOUR ALWAYS GOOD?
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WHO LIKES THIS PICTURE?
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WHO LIKES THIS PICTURE?
BUT WHY!?
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THE SCIENCE OF PHOTOGRAPHY
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OUR BRAIN PROCESSES PICTURES STARTING FROM
THE CONTRAST.
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DULL.
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BETTER.
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THEN OUR BRAINPROCESSES THE COLOUR.
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COLOURCAST
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THE VIRUS
A colour cast is a tint of a particular colour, usually unwanted, which affects the whole of a photographic image evenly.
COLOURCAST
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IS THIS COLOUR CAST?
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IS THIS COLOUR CAST?
NO!
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WE ARE AIMING FOR NEUTRAL TONES.
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IS THIS COLOUR CAST?
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IS THIS COLOUR CAST?
YES!
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THE DISK SHOULD BE WHITE... OR GREY.
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SO, HOW ABOUT THIS...
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BLUE?!LET’S LOOK AGAIN.
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WHAT COLOUR IS SUPPOSED TO BE THE SKY?
WHAT COLOUR IS SUPPOSED TO BE THE LAKE?
...AND THE MOUNTAINS FAR AWAY?
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BLUE.
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THAT IS NOT COLOUR CAST!
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LOOK CLOSER.
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CLOSER.
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CLOSER.
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WHAT COLOUR IS THE SNOW SUPPOSED TO BE.
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WHAT COLOUR IS THE SNOW SUPPOSED TO BE.
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OUR RGB GOAL IS 128/128/128
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OUR RGB GOAL IS 128/128/128
JUST 256 DIVIDED BY 2
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++
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+-+
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SO, WHAT WE SAID ABOUT RED + BLUE?
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R+B=M
R CG MB Y
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IF VIRUS IS MAGENTAWHAT IS THE CURE?
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R+B=M
R CG MB Y
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GREEN IS THE MEDICINE FOR MAGENTA
R CG MB Y
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IF PICTURES ARE OUR
PATIENTS...
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...WE ARE
DOCTORS
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NOT DOCTOR BROWN
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DR. VIRGILLI
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DR. VIRGILLI
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DR.V
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PATIENT MS. SNOWHITEWHAT COLOUR CAST IS THIS?
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IS IT RED?
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OR PERHAPS BLUEISH?
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PATIENT MR. GREYSTREETWHAT COLOUR CAST IS THIS?
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IS IT GREY?
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OR A BIT GREENISH?
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PATIENT MR. HYPOCHONDRIACWHAT COLOUR CAST IS THIS?
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OH, REALLY?
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OUT OF MY CLINIC, YOU
ARE NOT SICK!
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PATIENT MR. TOUGHWHAT COLOUR CAST IS THIS?
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WHERE IS NEUTRAL?
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HERE IT IS!
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WELL DOCTORS.
WHAT’S NEXT?
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PRACTICEPRACTICEPRACTICE
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DR.Vfavourite method
‘s
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Photoshop’s
LEVELS
Choose the channels individually ‘s
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Photoshop’s
LEVELS
Use the middle slider (gamma) to adjust the colour cast
‘s+ RED + CYAN
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Photoshop’s
LEVELS
Use the middle slider (gamma) to adjust the colour cast
‘s+ GREEN + MAGENTA
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Photoshop’s
LEVELS
Use the middle slider (gamma) to adjust the colour cast
‘s+ BLUE + YELLOW
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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
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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