Grey card: maybe a stupid question but...
I always use AWB but am going to try to shoot more in RAW, so it's been suggested to set a custom WB off of a grey card.
1. Does it have to be in focus when I shoot the grey card?....i.e. with my 70-200 lens, it will not focus when I hand-hold the card in front of the lens (too close).
2. I need to reset it every time my lighting changes...i.e. moving from a room with flourescent lighting to one with halide lighting, correct?
Canon 7D, Canon XSi, 70-200mm f/2.8L IS, 100-400mm f/4.5-5.6L IS, EF-S 50-250mm f/4-5.6 IS, EF 17-55mm f/2.8, EF 50mm f/1.8, 24-70mm f/2.8, Vello battery grip.