Minolta DiMAGE Scan Elite II Instruction Manual page 101

A QUICK GUIDE TO COLOR BALANCING
Yellow
Green
In photography, red, green, and blue are the primary colors. The secondary colors, cyan, magenta,
and yellow, are made from combining the primary colors: cyan = blue + green, magenta = blue +
red, and yellow = red + green. The primary and secondary colors are grouped in complementary
pairs: red and cyan, green and magenta, and blue and yellow.
Knowing the complementary colors is very important in color balancing. If the image has a specific
color cast, either subtracting the color or adding its complementary color will create a natural look-
ing image. If the image is too:
Adding or subtracting equal parts of red, green, and blue will have no affect on the color balance.
However, it can change the overall image brightness and contrast. Usually, no more than two color
channels are needed to color balance an image.
Color balancing is a skill that develops with practice. While the human eye is extremely sensitive in
making comparative judgements, it is a poor tool when making absolute measurements of color.
Initially, it can be very difficult to distinguish between blue and cyan, and red and magenta.
However, adjusting the wrong color channel never improves an image; subtracting blue from an
image that is too cyan will give a green cast to the image.
Red - decrease the amount of red.
Green - decrease the amount of green.
Blue - decrease the amount of blue.
Cyan - increase the amount of red.
Magenta - increase the amount of green.
Yellow - increase the amount of blue.
Red
Cyan
Use this quick reference
chart to complementary
colors when adjusting the
color balance of an image.
Magenta
Blue