I just shimmed the Collapsible I-50 that Ray gave to me- The focus was WAY off, required an extra 0.25mm shim installed. First time taking one apart, but it is almost identical in construction to the Canon 50/3.5 Collapsible.
Going out to test now on the M8.
Edit- added an extra 0.07mm to the shim, is spot on now. Also modified it by taking the infinity lock off, it was causing problems even with a cut-out M-Mount adapter.
Last edited by Brian Sweeney : 05-09-2010 at 17:37.