Archived posting to the Leica Users Group, 2002/07/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]yes, i had a 90 'cron (gen III) in which the focus cam was not quite true to the actual focus of the lens; off by about 1 inch at 6 feet. leica USA took care of this for me. this was a real bear to track down because my m6 at the time had a nearly precisely compensating error (at 6 feet) in its rangefinder focus. i ended up sending both lens and body in, and afterwards they were all very accurately aligned. i have become rather paranoid about rangefinder misalignment, as it has at one point afflicted every rangefinder camera i currently own; 2 m6es, a fuji gs645 and a contax t. so i periodically run focus tests wide open on a tape measure at 6 foot, 12 foot and 25 foot distances. this is a problem endimic to the rangefinder concept. when i used to shoot everything at f8, it was never a problem, but with 90 crons, 75 lux, and 50 noct wide open, you can sure see if your system is off. - -rei > From: Pierre Charbonneau <charbonneaup@videotron.ca> > > Since this problem happens on this lens alone and I have no reason to > suspect a range finder problem with my 3 M bodies, it > seems to that the cam of focusing on the lens itself is misleading the > camera range finder. > > So my questions are these: > -Has anybody experienced a similar problem? > -Are Leica technicians able to adjust the focusing cam on an individual > lens? > > Any thoughts or experience on this problem will be greatly appreciated. > > Pierre Charbonneau, > Montreal - -- Rei Shinozuka shino@panix.com Ridgewood, New Jersey - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html