Some Notes on Light: quality, color, direction, contrast, temperature...

Hardness:

Hard light = high contrast (sunny); bright subjects against dark background (flash)

Soft light = smooth and diffuse (cloudy; shaded areas)

Colors:

Warm golden glow: sunlight early or late in the day

Bluish: noon light reflected off snow

Natural light: true color rendering: blue-white source

Incandescent light: yellow, color shift

Functions:

ambient(environment, feeling)

accent(focus, direction, depth, dimension)

task(sufficiency)

decorate (move eye)

balance of power