Is there any reliable way to tell when lenses have been replaced? I have one Automat that clearly has been, as they are NEW Carl Zeiss Tessars, neither Jena nor Opton... and, knowing Summicrons went through a process of improvement (I have a 1-cam Summicron-R 50 that cannot approach my 3-cam), did the Rollei Xenars, Xenotars, Planars, etc, go thru improvement? Are newer ones better? Peter Nebergall --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list