Originally posted by Surfwatch I suppose I will have to keep a card in my camera bag on any AF adjustments. I wonder if it would be necessary to have different AF fine adjustments for different levels of zoom in say a 55-300. That could be a nightmare, or would an AF adjustment if required be good for the whole range, on any particular lens.
It depends on the lens and the light. Some lenses might front or back focus more or less at certain zoom ranges, or only in Tungsten for example.
You'll have to play around until you find a setting that works for you most of the time, or in certain circumstances.