Specifications, comparison, reviews,
MTF-charts for lenses by Canon,
Nikon, Sony, Pentax, Olympus,
Sigma, Tamron, Carl Zeiss, etc.
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5 0 2406
4.67 0 1976
4.33 0 2337
Soft at the max aperture
4 0 2470
Owner reviews: Carl Zeiss Jena DDR Tessar 50 mm f/ 2.8
Definite Tessar look to images. Very well designed small lens with good IQ.
Well designed, but not well implemented. Various mechanical aspects are a little coarse, but optics are fine.
Probably the Tessar to get if you want to try a Tessar; it's cheap and good.
Mine is nowhere near as soft wide open as the images posted here show.