That is a lot of flare. The Sonnar has only six glass-air
interfaces, same as a Tessar. I wonder if the flare is from
something else such as haze in the lens or the cement beginning
to separate. Shine a strong flashlight through the lens to see if
there is any haze. Biotar type lenses have eight glass-air
surfaces and do tend to be flary. Flare from element surface
reflections increases geometrically with the number of reflecting
surfaces.
On 10/21/2018 3:35 AM, CarlosMFreaza wrote:
I bought a pretty rare lens "Carl Zeiss Jena Nr 3006362" T coated eight years ago and I had never used it. It's part of one of the firsts T coated lenses batches made at Carl Zeiss Jena after the factory destruction during the war, in March 1947; the manufacturing had something to do with Soviet technicians training to manufacture the Contax camera as Kiev in the Soviet Union, but I don't recall details.
Yesterday I put this lens on the Contax II 1937 loaded with an outdated Ilford Delta I kept in the freezer and took some photographs, developing the film with the Romek PQ7:
The sun is in the picture:
. https://flic.kr/p/2b9Dm71
Carlos
