I'm looking into getting one and this may seem like a dumb question but I've been reading that there are gray cards for exposure and one for white balance. Do you need both? If you shoot both indoors(studio) and outdoors can you get away with having one or the other and which one would that be? TIA
I got the set that's white, gray, and dark gray. it's a digital gray card set. I don't do custom WB (in camera) but you can with one of the cards. I use it to get the WB in PPing ... and I've been frustrated because ACR wants to really warm up my photos too much when I use the gray card.
so I'm not much help, am I? I guess my recommendation is to get the kind for WB, because the exposure setting is harder to do on the fly.