I recently got a protarlinse in compound shutter. The lens has sequential serial number with F=250mm of each group. I did not find data on Zeiss lens brochure. Would appreciate anyone can help me to identify the combination focal length?
I recently got a protarlinse in compound shutter. The lens has sequential serial number with F=250mm of each group. I did not find data on Zeiss lens brochure. Would appreciate anyone can help me to identify the combination focal length?
this thread might help.
http://www.largeformatphotography.in...ghlight=protar
I checked many sources and zeiss brochures, but did not found any information of F=250mm protarlinse. I don't know why? Anybody can help to explain? And there is no information about the combination focal length. Please help.
The F could stand for focal lengh: just put the lens on the camera, focus at infinity and measure the distance between the GG and the aperture.
This should give you a rough indication of the focal lengh.
Some mm diference will not make that much diference in what angle you of view you will get and in that way you know a bit what you can do with the lens.
Peter
Do they say which Protarlinse:
e.g.: VII or IV or other? They often do but not always.
Bernie
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