Rate this post by selecting a number. 1 is the worst and 5 is the best.

Author Message   David_nebenzahl Tinkerer Username: David_nebenzahl Post Number: 242 Registered: 12-2009 Rating: N/A Votes: 0 Posted on Wednesday, March 31, 2010 - 07:37 pm:    You seem to have got it now. It's pretty simple, really. Basically, don't count on the focusing "knob" (ring/barrel/sleeve/whatever) being in the correct position.