50mm · f/1.9
The Agfa Color 50mm f/1.9 is a fast normal single-coated prime lens for Pentax SLRs, based on the Tessar design known for sharpness and flare resistance. It is compact and well-built, but lacks stop-down coupling, requiring manual aperture operation, and has meter markings instead of feet. Optical strengths include good sharpness and low aberrations typical of Tessar types, though flare handling is acceptable without a hood. It suits photographers seeking a small, inexpensive lens for street or casual use, especially on compact SLRs like the Pentax SV.