Saturation Parameter - Nikon D300 Complete Manual

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Here's the misnomer about Hue and the reason why I showed

the color wheel the way I did: minus values don't "warm"

while plus values "cool." Some colors may get "warmer" or

"cooler," but the color spectrum is a continuous circle, so

every color is affected in slightly different ways:

Thus, a skin tone, which has reds and yellows in it, gets both

a red and a magenta boost with a minus Hue value, which

may not be what you want. On the other hand, a plus Hue

value might take the skin yellower and greener. Which is the

better choice? Well, it depends upon whether reds (plus) or

yellows (minus) dominate the skin tone. And, of course, all

the other colors are shifting, as well. In short, be very careful

with hue adjustments.

Saturation Parameter

The Picture Controls allow you to control the saturation

parameter from -3 (remove saturation) to +3 (add saturation)

Saturation is easy to understand if you think about it in terms

of CIE Lab Color definitions, where luminance (brightness) is

separated from chroma (color) information. If you boost

saturation, you don't change the brightness of a pixel, you

increase the amount of color in that pixel. Personally, I dislike

added or subtracting saturation via Picture Control, as it is

difficult to change your mind after the fact and remove your

decision via post processing. The more you boost or reduce

the saturation, the more difficult it is to correct.

Thom Hogan's Complete Guide to the Nikon D300

Adds magenta

Adds magenta