The old lens is a very good performer with uncoated glass. I sometimes got lazy and I did not focus too carefully, but I was tricked by the lens which has been modified to ltm, and one part of the lens barrel shows aperture settings down all the way to 32 when in fact the smallest aperture is 11. DOF guessing would be off then. The view of course is that of a 100mm lens for some compressed views, which I like.