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T O P I C R E V I E W
Gelios
Posted - Aug 12 2008 : 08:24:05 AM Hello again!
Several years ago, I had a 1973 M42 Mir 1A lens (2.8/37mm). I saw very little documents about it.
Optically, it seemed similar to any other Mir 1 but the aperture system was odd: only one ring to turn with a chrome button and a spring. To adjust the diaphragm, I needed to push the button and turn the ring. As soon as I released the button, the diaphragm was linked to the ring which was used as any preset lens (full aperture to preset aperture by turning it). If I wanted to go back to full aperture, I just had to push the button and the diaphragm was set to nominal aperture.
Now, the question: knowing that preset Mir 1 lenses were made since years, what was the specific use of such lens (if any)?
BTW, there is one to sell on Ebay (Item #360076906260): not really cheap ($80) for a Mir 1 but it is not the usual type...
Thanks for your comments!
3 L A T E S T R E P L I E S (Newest First)
Luiz Paracampo
Posted - Aug 13 2008 : 3:51:49 PM Nicholas Noblesse oblige changement! LP
Gelios
Posted - Aug 13 2008 : 07:57:19 AM Yes luiz but it doesn't explain why they changed the aperture system; a regular preset one would be fine as there is no connection with the mount. Strange...
Luiz Paracampo
Posted - Aug 12 2008 : 5:16:42 PM Nicholas Easy, remove the rear ring, so that it can be adapted (with the proper "A" ring to several cameras Zenit M39 Zenit M42 Zenit K Mount Kiev N mount and others..
