Quote Originally Posted by jhw View Post
Attachment 48896

This pic shot in the sleezy-camera-swap-buyer mode, with bright light from behind the lens...
From the front, it looks hair-thin, but does catch my fingernail...
It's not in the center... Seems to just be in the coating, not down to the glass...
We know that lenses with huge pits, marks, spots, shattered portions can still make (albeit, less contrasty) images...

Test roll shot backlit, front and sidelit went to lab today, back in 2 days... But just wondering if folks think, as I hope, that the only harm this does is to the resale value.
That's more of a gouge. Far deeper than the coating.

One of my favorite lenses is a pre WWI 9 1/2" Dagor in a Compound. Got it at a camera show for $40 because it has a 5/16" gouge very near the center of the rear outer glass. I filled the gouge with India ink, and can see no difference ( after 12 years of using it on 8x10) between it and another 9 1/2" of the same vintage in barrel.