I sometimes find flats that are too bright are harsh and damage the lights I don't understand what this means Greg - what sort of damage do you see?
regards ray[/QUOTE]
I'd have to look over past callibrations. Mostly with the CDK which has been the touchy one to flat out in the past. The APOs are a piece of cake and very forgiving. I don't have exact and precise steps I took at the time so forget the comment as I may not be able to replicate it but I would still say though that too bright a flat could be damaging. After all you are dividing the values into the light to even them out so too high a number from the flat could divide too savagely?? I could be wrong here.
Greg.
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