I'm one to admit, for scanning and computer viewing, i wouldn't have any problem using such a lens. However, i'm enlarging optically quite largely. I feel as thought if the surface area of transmitting light is reduced, then over all "resolution" is reduced, and i payed a premium for this lens.. My second concern is, i'm not a collector, i'm a shooter, and now that this has started, who says it's going to stop? I just had a horrible experience with my precious 1.5 sonnar decementing. agghhh that lens was amazing.. Nothing to be done, the whole element decemented. Thanks for all the comments, i just wanted to be sure. It's going back now, but the seller who said " it was perfect optically", and said " it has no haze" (it has thick hase around the rear element) is being silent, so, hopefully he won't be a loser and not own up to his mistake.