Kelly Flanigan , Jan 06, 2005; 02:02 a.m.
My 135mm F2.8 Vivitar in T4 Autodiaphrame mount was about 50 dollars; when gasoline was 25 to 28 cents per gallon; in the 1960's. It is the lens to the left of the Exakta. It is greatt at F5.6 and stopped down more; and good at F4; and ok at F2.8. I still have the lens; it was mailordered from Cambridge Camera; and has been on Exaktas; Nikons; Nikkormats. The T4 system adapters allow for usages on different cameras.