> Create a glare model, A small dust particle on a lens or on a sensor invalidates a model. Flare modeling is something that is proven not to work for a general case. >> The bias is >> the constant part of error at the darks. > > Hmm. I would have expected that to be automatically subtracted in the > sensor processing. Usually, it is. Sometimes the bias arises from the flare in camera chamber and is incorrectly attributed to sensor bias. -- Iliah Borg ib@xxxxxxxxxxx