Anybody with knowledge on early zeiss camera optics?
I’ve had a 196mm Carl Zeiss anastigmat lens for years but have only been able to find a few references about it.
It’s probably 1890’s, using not the fstop scale but zeiss millimetre aperture scale, numbers corresponding to actual mm diameter of aperture.
It’s quite small in size but covers 8x10 easily, excells at 4x5.
Any info on the millimetre system would be appreciated.
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