I had the same problem. It probably has to do with the fact that the lens elements are so far away from the rear lens flange that you have a greatly magnified, itty-bitty image circle that can't help but be vignetted. The two 2X, extenders, APO & non-APO are different enough to almost see why it happens. Just an observation, Art Tafil _natstek@xxxxxxxx (mailto:natstek@xxxxxxx) ************************************** See what's free at http://www.aol.com. ------ Unsubscribe or change to/from Digest Mode at: http://www3.telus.net/~telyt/lrflex.htm Archives are at: http://www.freelists.org/archives/leicareflex/