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mario santos

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  1. M41 lenses are lenses from medium format cameras like the reflex korelle, but your lens appears to be a projection lens. I just bought one The tessar 80mm 2.8 in that mount and want to make the same adapting. They have a focal distance diferent to other M42 lenses and you must make experiments to see whats the best distance using the helicoid. I dont have the lens yet but i guess the first try however would be to surrond the mount with tape and fix it to the m42 adapter and focus on the lens at infinity to see if it reaches infinity on the camera. next would be to see which is the minimum focus distance compared to the scale on the lens (m). From that info you should be abble to position the lens with the helicoid and then block the helicoid at that point and focus only with the lens. Here is a link for a guy selling one like yours adapted to M42:http://www.ebay.ca/itm/Ex-Wollensak-Raptar-50mm-f-1-5-Modified-to-M42-X00648/282365029167?_trksid=p2047675.c100623.m-1&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20160608112848%26meid%3D159db3eba68f41b68ae025d185b5cd7d%26pid%3D100623%26rk%3D4%26rkt%3D6%26sd%3D311540794753 for the ridiculous amount of: 1490USD Its just a small tube inserted on the back maybe 2-3cm US $1,490.00
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