Adorama VDCM43 Video C Mount for Mounting C Lenses
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Adorama C Mount Adapter to Mount Lenses to Micro 4/3 Camera Mount

SKU: VDCM43

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Shopper : what is the maximum near-thread lens diameter that will seat completely on the inner portion of this mount? In other words, what is the diameter of the inner "well" of this adapter?WING L : I have to correct my mistake, the inner diameter should be 36mm not 26mm I said before!WING L : The diameter of the inner "well" was 26mm. I had to file 1mm away to fit my Kern-Switar 18mm F1.8 lens.JOHN A : No idea. I didn't get the kiron. Adorama basically sent me a $5 ebay special for $24.95.WK A : About 35mm or a little more that an inch & 3/8s. This is a rough measurement with a ruler, not a micrometer.DAVID B : The maximum near-thread lens diameter is 1.443" or 29.06 mm. There is also a second "step" 1.556" (39.52 mm) in diameter and 1.5 mm higher than the inner portion. As noted in the description the picture is not accurate. It is one solid piece of machined aluminium (annodized black). On my Cosmicar 12.5mm f/1.4 lens I needed to modify the c-mount back portion of the lens. I mounted it in a drill press and used a file (aka poor man's lathe) to turn the outer diameter down to 39.5 mm. I also had to then "machine" a corresponding 29 mm diameter step 0.5 mm deep on the face of the lens c-mount part in order to achieve infinity focus.
Shopper : Why Did You Choose This?GARY W : To experiment with some cheap C mount lenses I picked up for my Panasonic m4/3 cameras.

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About Adorama VDCM43 Video C Mount for Mounting C Lenses

This Adorama Video C Mount is designed for Mounting C Mount Lenses to Micro 4/3 Camera Mount. Picture not accurate

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