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60mm f1.1?
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PostPosted: Sat Jan 08, 2022 6:40 pm    Post subject: 60mm f1.1? Reply with quote
I found a lens that seller saying is a 60mm f1.1 adapted to M42, probably the rear mount is around 62mm,as I see a step down ring from 62 to 52 and M42 . There is nothing written on the lens ,do you guys know any option like this ? On ebay there is a 60mm 1.1 Optec OBX that might look pretty much the same, but couldn't find any info about it


PostPosted: Thu Feb 03, 2022 12:09 pm    Post subject: Re: 60mm f1.1? Reply with quote
kiddo wrote:
I found a lens that seller saying is a 60mm f1.1 adapted to M42, probably the rear mount is around 62mm,as I see a step down ring from 62 to 52 and M42 . There is nothing written on the lens ,do you guys know any option like this ? On ebay there is a 60mm 1.1 Optec OBX that might look pretty much the same, but couldn't find any info about it


Could be an x-ray or industrial lens. Most of these have very short flange distances. Ask the seller about focusing on a mirrorless cam.


PostPosted: Thu Feb 03, 2022 7:28 pm    Post subject: Reply with quote
Or you can just hold the lens up against a white wall, move it back and forth until focus is achieved, then measure the distance from the flange to the wall. This will determine where the film or sensor plane needs to be in relation to the front of the camera.


PostPosted: Mon Mar 21, 2022 5:17 pm    Post subject: Reply with quote
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