Sorry for borrowing from the recent thread concernong Zeiss lenses!
I have a lens labeled "8x10 Rapid Rectilinear No 2951" "Montgomery Ward & Co Chicago"
Can anyone tell me anything about it? It doesn't have a flange with it, but rigging it up to a lensboard and measuring from the front of the board to the ground glass, I get a measurement of 12 3/4". The front and rear cells appear to be the same. It's not in a shutter and is in a long (about 3 1/4") brass barrel. It has marks beside f stop numbers for all the marks except for the smallest and largest openings...the numbered marks ar 8, 11, 16, 22, 32, and 44.Forty-four? What's up with that?. Any ideas why where there should be f stop numberes noted beside the marks, there is nothing? Focus shift or diffraction that would cause using those two aparture openings to be a problem?
Thanks in advance,
DG
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