Custom WB using 3 color cards
Thanks so much. Yes, I am referring to the black/grey/white cards. I usually try to set my custom WB in the camera & shoot RAW, which is why I was looking for an 18% grey card, but I am always trying to find ways to improve. Perhaps I'll get both.
You’re welcome. Be aware that the classic 18% gray card was originally intended as a method of achieving a standard exposure with film — which may not really give you a good exposure, since digital images typically don’t have much exposure headroom and it is really easy to overexpose.
Some 18% cards — I’m thinking of the Kodak card — also aren’t photographically neutral, and so aren’t suitable for doing a good white balance. Usually a brighter card, guaranteed to be neutral, is a better bet for doing white balance.
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