Colors of the Rainbow
Color Vision
Color Properties / Terminology
Color Luminance
The Color Wheel
Color Space and Gamut
Photography Gray Card
A gray card is an object of neutral color which
reflects a certain amount of light. It is used
to solve two color related problems in photography.
One problem is a so called color cast
There are several good reasons to buy a professional
gray card but if you are in a hurry or want to
experiment you can also print a gray card first.
Consult your camera's manual ("manual white balance" and
"exposure time") for instructions on how to use a gray
card.
Download
Description | RGB Value | Lab Value | Link |
12% Gray Card | 31.37% / 80 | 34% | Download * |
12% Gray Card | 33.33% / 85 | 36% | Download * |
18% Gray Card | 47% / 119 | 50% | Download * |
18% Gray Card | 50% / 128 | 54% | Download * |
90% Gray Card | 93.33% / 238 | 94% | Download * |
Post Processing | multiple | multiple | Download * |