I just bought a lens called "Conway F.8 Three Focus Rapid Rectilinear" - a very old brass lens with old style f/stops numbered 4 to 256 (I know the modern equivalent is f/8 to f/64). The Wollensak brass shutter boasts three focal lenghts, 12.5, 20 and 28 inches, but I don't know how to get beyond the basic 300+ mm configuration. So far I tried to remove the front element, but I ran out of bellow draws before I could focus on the building the other side of the street.
Does any one knows how to use this lens? Any other information would also be appreciated - I read about this Conway company, but know nothing about their lens line up. Serial number is #1221, in case anyone can date it that way (miracles do happen from time to time). My guess is that construction dates back from about 1905-1910.
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