2011/1/14 Dan Daniel <dan.daniel.photos@xxxxxxxxx>: > I was recently given a non-functioning 2.8 Tessar Rolleiflex.... > Body: > 1101075 > Viewing: Nr. 819302 Heidoscop-Anastigmat 1:2.8 f=8cm > Taking: Nr. 2448307 Carl Zeiss Jena Tessar 1:2.8 f=8cm T[in red] That is a pre-war CZJ Tessar lens serial number (1938), it is part of the Tessar 2.8/80 lenses F&H bought from CZJ to produce the 2.8A in 1939, F&H had a prototype ready to manufacture for the market that year but the camera couldn't be made due to the war. After the war, F&H re-newed the 2.8A project and several new prototypes were made up to the camera manufacture from December 1949, CZJ coated the lenses F&H had bought before the war and according some sources there were errors assembling part ot these lenses after to coat them causing a poor performance for the firsts 2.8A cameras, however these sources also say F&H recovered all the cameras with the problem and corrected the error and then there were no and there are no 2.8A cameras in the market with lenses having the wrong assembling. Claus Prochnow does not comment the assembling error, however he says the German and European market rejected the 2.8A and most cameras were sold in the American market. I have some books written at the time and it was said the 3.5 Tessar had better performance than the 2.8 Tessar, it has nothing to do with the assembling error but with design issues as Richard explained. Anyway I have read about users satisfied with the Tessar 2.8/80 performance, facts are F&H looked for a very quick replacement for the Tessar 2.8/80 and then appeared the 2.8/80 five elements lenses Biometar, Xenotar and Planar. Carlos --- 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