thinkfloyd
Flippy Nose
I got a Canon Serenar 50/1.9 from here recently, and received the lens just now. Horrors, it's backfocusing by about a whopping 6 inches! I once used shims to fix focus issues with other lenses, but it's my first time to have a collapsible lens... how do you fix focusing issues with a collapsible lens? thanks!