Jan Brittenson
Senior Subscriber Member
I have a 4th gen cron 35 with a very narrow ring of what looks like thin oil around the edge of the inside rear (or second from rear, hard to tell) element. It looks almost like mineral oil or such, but my guess is that if this were really oil it would be all over the place and not along a nice what looks almost intentional ring at the edge? There's nothing on the aperture, and the lens looks clean otherwise. Could this actually be glue to hold an element in place? Anyone else seen something similar?