If you're buying a used lenses from me don't pay any attention to this post ;-)
If I screw in the front and rear elements of a 150mm/5.6 Symmar-APO into a late model Compur 0 shutter that originally held a 135mm Symmar-S.... are the scales going to be so darn close it won't matter if I change them or not?
I'm suspecting they will be off by about a 1/3 of a stop -- do you know in which direction?
Bookmarks