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PS Color Balance Tool
Mar 12, 2021 17:34:12   #
The Capt.
 
I have noticed that on one end of the sliders are the letters RGB and on the other CMY. Does anyone have any insight as to why this is. Since I won't be hanging around thanks in advance.

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Mar 12, 2021 17:41:56   #
Ysarex Loc: St. Louis
 
The Capt. wrote:
I have noticed that on one end of the sliders are the letters RGB and on the other CMY. Does anyone have any insight as to why this is. Since I won't be hanging around thanks in advance.


An RGB image has three color channels Red, Green, and Blue. The opposite of Red is Cyan. The opposite of Green is Magenta and the opposite of Blue is Yellow. The three sliders adjust color in each channel toward or from the channel color's opposite.

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Mar 13, 2021 15:31:42   #
burkphoto Loc: High Point, NC
 
The Capt. wrote:
I have noticed that on one end of the sliders are the letters RGB and on the other CMY. Does anyone have any insight as to why this is. Since I won't be hanging around thanks in advance.


Red, Green, and Blue are the additive primary colors of light. Together, in equal proportions, they add up to white.

Yellow, Magenta, and Cyan are the subtractive secondary colors of light generated by the remaining presence of two of the three additive primaries (or the subtraction of one primary via reflection or filtration). Yellow, Magenta, and Cyan (with 'K' (or black) added for Kontrast) are used in process color printing. Yellow, Magenta, and Cyan dyes are also used in silver halide based photographic films and papers. The subtractive secondaries subtract red or green or blue from the white light reflected from paper. Both film and paper make negative images, so two negatives together equal a positive image...

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Mar 14, 2021 17:44:54   #
The Capt.
 
burkphoto wrote:
Red, Green, and Blue are the additive primary colors of light. Together, in equal proportions, they add up to white.

Yellow, Magenta, and Cyan are the subtractive secondary colors of light generated by the remaining presence of two of the three additive primaries (or the subtraction of one primary via reflection or filtration). Yellow, Magenta, and Cyan (with 'K' (or black) added for Kontrast) are used in process color printing. Yellow, Magenta, and Cyan dyes are also used in silver halide based photographic films and papers. The subtractive secondaries subtract red or green or blue from the white light reflected from paper. Both film and paper make negative images, so two negatives together equal a positive image...
Red, Green, and Blue are the additive primary colo... (show quote)

Yes, I have noticed that the additive and subtractive systems are opposite and I am wondering how or why this is. I'm thinking that there must have been some kind of planning here and reasoning that this was done.

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