I've seen this mentioned a couple of times along with saving RAW images Can you give me a little more info please? Can this be done on a SLR with negs scanned to CD then set white point or is it only for DSLR? The guy who shoots commercial for me shoots a card at the begining,during and towards the end of the shoot. This card has grays and colours on and he can then check them against the tolerance and change the capture. Should DSLR's also be doing something similar? Or is this setting white point?