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| Bob Dodds | profile | all galleries >> All Your Base Legendary Lens Be Ours >> Zeiss M42 and Contax lenses >> Compare CZJ Biotar 75mm f1.5 Fat and Skinny | tree view | thumbnails | slideshow |
Prewar 1930's "skinny", and post-1951 skinny, Carl Zeiss Jena Biotar 75mm f1.5 have 18 diaphragm blades and focus closer than "fat" WW2-era and East German 75's. They all have legendary bokeh, and are exceptionally sharp wide open. They need dslr custom color balancing for each lighting and aperture situation.
Fat biotar 75's have been used for xray and copy machines, so they can focus as close as skinnies, or closer, just by adjusting infinity to closer than infinity so that close focus is as close as needed.
Here we are just comparing sharpness of fat and skinny biotars.
 Fat Biotar on Sigma SD14 DSLR |
 1930's 1940's 1950's CZJ Biotar 75/1.5 |