I think this is the correct forum. If not please let me now.
So in what seems to been a never ending quest for accurate white balance I stopped in Calumet today and asked for a gray card. To which the saleperson responded, \"film or digital?\"
\"digital\", I replied. Somewhat perplexed by the question.
He then went on to explain that an 18% gray card is only used for film white balancing while a 15% gray card is what is needed for digital white balancing. This was the first I heard of a difference so I took his advice and purchased a 15% gray card.
That brings me to this evening where a google search directed me to this article by Thom Hogan that states properly calibrated dslr sensors expose for 12% gray??
Can someone help shed some light on this? Is there a difference between film and digital gray cards? Does it matter 12%, 15%, 18%......
