Quote Originally Posted by Rick Olson View Post
My Nikon 450M covers my 8 x 20 with room and my 305 G-Claron covers just to the corners, but is sharp across the image.
For some reason there appears to be rare situations that I have been aware of where participants here have indicated that their 450M lenses are exhibiting less than optimal coverage - specifically falling short of 8x20. This is rather rare so I am at a loss to explain this.

I have two of these lenses and they both cover on 8x20 and 11x14 with the regularly reported excessive coverage.

It is a always good idea with any ULF lens purchase to reserve sufficient time with the seller to put it on a lens board and check the coverage for your self.