Well, since I just got a D70 and have always used custom white balance with the other Minolta "carry camera", I do know the need. My question is this: Some suggest the grey card and others a white card. I do not have a grey card and use a white paper to set white balance. This seems to work well. What is the difference? Thanks for taking the real time to put this tut together. You obviously are involved enough to spend the time to do it. Thanks and much appreciation. Tom.