On Thursday, March 31, 2005, at 06:40 AM, FRANK DERNIE wrote: > One of the differences may be the accuracy of the lens register > relative to the film plane and the accuracy/linearity of the > rangefinder. Both these will effect the focus accuracy, particularly > wide open. True enough, but are there significant differences in this respect between, say, Leicas, Rollei 35mm cameras, Nikons and Canons? I mean, significant enough to actually make a noticeable difference in picture quality?