Hi Guys,
I bought this lot of camera equipments, among which is a vintage lens fitted in a Bionic shutter, the patent number/date on the shutter dates the lens to/before 1912, I think the shutter was made by Wollensak, by then Lego/Bionicle did not exist.
The aperture scale is american, from 4 (f8) to 128 (f45), 4 shutter speeds from 1/25 to 1/200 plus T and B.
The interesting part is the lens elements, there are 2 glued elements (1 group) before the shutter, but only 1 element behind the shutter.
Who made the lens? I did some google search and seems most likely it was Ansco? There was a Modico Anastigmat F7.5 (closer to my lens' F8), for their folding cameras. But the shutter seems too big for a folder? it is about the size of a regular Copal No. 0.
What is the construction of this lens? Is it Anastigmat? The rear group seems missing one element, because the front of the rear mount (the side closer to shutter) has internal screws but no element there (only the rear of the rear mount has one element). But the lens can form "sharp" images on the ground glass, the focal length is about 165 to 170mm I think.
From the shutter it fitted in, this lens probably was not a top of the line lens then?
Will take test pictures with it later.
Thanks!
Wenbiao
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