Originally posted by stevebrot I have puzzled over this and wonder if it has to do with field curvature. Dedicated macro and bellows lenses are designed to have very flat fields.
Steve
I agree, in fact my bellows setup presently has a 135 mm enlarging lens mounted on it.
As you said, when I started photography in the 1980’s the flat field characteristic of macro lenses was always part of them being recommended exclusively for copy purposes.
I had converted an old B&W enlarger into a copy stand for document copying purposes