I have had a lot of Zeiss Biotars. They vary all over the place -- from "paste" to excellent. Of course some are prewar, some wartime, some immediately postwar... so working conditions and supplies matter.... and the Tessar is no doubt a thick book waiting to be written! Even my R-Summicrons are different -- and I'd suggest these hand-fashioned instruments are as different as Stradivarii. But doesn't that make it a lot more fun? (I did say in STREET PHOTOG: "Photography is a lot like jazz; there's a whole lot of ways to play it...") Peter Nebergall On Wed, 26 Apr 2006 12:11:02 -0700 (PDT) Jerry Friedman <tinycameraco@xxxxxxxxx> writes: > > Largely a question of coatings delivering better contrast, as > indicated by > others. Single/non-coated lenses are just as sharp but because they > permit a > greater degree of "haze" from light bouncing around, some people > feel that they > do not destroy minor tones as much as high contrast lenses with > better > multi-coating. For black and white this can be important. > Personally, I like > contrast, sharpness and high resolution and accuity etc, because > when cropping > a MF negative, the greater detail enlarges better. Of course, if the > tones are --- 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