This was quite an in-depth lesson for me. I enjoyed learning what was presented to the class and it made me think back to how much a really didn't know about colour information - even after all my previous experience in the industry. However, this also made me feel glad i'm doing this degree :)
Here are a few notes for class.
Visible colour
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the visible colour spectrum
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Colour to a camera
Colour to the human eye.
Colour Mode - describes the colours we can see and work with. Each mode represents a different method (usually numeric) for describing and displaying colour. There are ADDITIVE colours and SUBTRACTIVE colours.
Commonly used colour modes:
RGB - Red Green, Blue - Link
CMYK - Cyan, Magenta, Yellow, White - Link
HSB - Hue, Saturation, Brightness - Link
LAB - Lightness, A and B indicate colour space coordinates - Link
RGB - are Additive Colours. If you combine red, green and blue you will get white light. This is the principal behind the computer you are viewing right now as well as the iPhone in your hand.
CMYK - are Subtractive Colours. If you print Cyan, Magenta and Yellow inks on white paper, they absorb each other on the page and appear Black. So in a similar way to RGB, it is all just a visual illusion.
Colour Space - is a variant of a colour mode and has a specific gamut (range) of colours. For example, within RGB colour mode are a number of colour spaces (Adobe RGB, sRGB, Adobe RGB 1998, ProPhoto RGB and so on).
In addition to this, even though slightly off-topic, but still definitely something of interest is light colour due to temperature. The following two examples detail this:
Click the following two (2) links to view a brilliant reference website for understanding colour and various other digital elements for a photographer. It sure helped me :)
D.
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