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 (~ hue tint) in images caused by different illumination conditions and the cameras (in)ability to neutralize it. The other problem is the lack of a reference point for managing exposure time (amount of light captured), to prevent an image turn out too dark or light.

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 *

* Please don't link these files directly. Link to this page instead.