While you can pick up an 18% gray card at most photography supply stores, you're basically buying a piece of gray board. The benefit of buying a card is that you know you're getting exactly 18% gray.

A gray card is a flat, gray-colored surface that reflects 18% of the light that hits it. It is designed to have the same brightness as a midtone in your scene, which means it is neither too dark ...

The Neewer Gray and White Card set has cards that measure 8 inches by 10 inches, which is quite a handy size. They're designed for both digital and film photography to help you get your exposure and ...

Since the beginning of photography, shooters have used an 18 percent gray card as a brightness gauge for exposure. When television came along, and then color video, the role of the 18 percent gray ...

15 Oct 2008 14:11PM byPeter Bargh Grey cards and colour meters have been the secret weapon of pro photographers for years, Peter Bargh checks out the Gray Card from FocusFX.nl ...