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01-19-2008, 02:44 PM   #1
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Join Date: Oct 2006
Location: NJ USA
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new APO Rapid Rectilinear 180mm

APO in this case stands for A Plastic Outside. It's a mid-late 1910's Bausch & Lomb Rapid Rectilinear lens. Possibly from a Vest Pocket Kodak #3 camera. Approximately a 180mm focal length. US stops from 4 to 128 (in f/stops: f/7.7 - 56). The Kodak Ball Bearing shutter has patents from 1910 and 1913.

This setup I just lashed together to test a theory. Unfortunately this lens is too long throw for the screw a PVC pipe into another PVC pipe to focus very close - I get to about 15-20 feet, but do focus to infinity. Maybe a shorter MF lens, a 105 or even an 85 will do the trick.

So no real bokeh shots in this setup. But the thing works.

These are at US 4.5 or f/10 or so

Last edited by Nesster; 01-19-2008 at 02:46 PM. Reason: messed up the picture links
01-19-2008, 03:05 PM   #2
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roy's Avatar

Join Date: Sep 2006
Location: D/FW area, Tx.
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Posts: 1,712
you have way too much time on your hands....

good read tho.

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180mm, apo, focus, k-mount, kodak, lens, pentax lens, pipe, pvc, setup, slr lens
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