Collapsible I-22 or I-50 users...

Juan Valdenebro

Juan Valdenebro

Truth is beauty
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May 23, 2009
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Hi,

Has anyone any screw filter for them? (Not clip-on...)

Or anyone knowing who made screw filters for them in Russia or outside, and in which size...? There's no much information I can find... Thanks!

Cheers,

Juan
 
I think it's around 20mm. The Soviets made slip-on filters, but no screw-in filters to the best of my knowledge. Somewhere I read that Argus C3 filters actually fit in there.

If you use filters regularly and want to exchange them with other Soviet lenses, you could build a do-it-yourself filter adapter for the common 40.5mm filters. Buy a Soviet 36mm slip-on filter and knock the glass out of that, then to buy a standard 40.5mm filter and knock the glass out of that as well, The smaller filter can be press-fitted into the back of the larger one, and the larger one is threaded so you can screw in any 40.5mm filter.
 
I've never seen a screw filter for them. That doesn't mean they don't exist in some parallel universe I don't have access to. The official filter size is A36 which is a push on type. Fedka.com offers some Russian filters but those made for Leitz Elmar (A36) should fit as well.
 
19mm screw in filter, identical to that used on the Argus C3 50mm F3.5 Cintar. Walz made some for the C3 that I use on mine.
 
I guess my I-22 will be here in a couple of days... By now I have just read there's a screw, but information is contradictory... I'll have to wait until then to meter it...

Cheers,

Juan
 
rxmd said:
I think it's around 20mm. The Soviets made slip-on filters, but no screw-in filters to the best of my knowledge. Somewhere I read that Argus C3 filters actually fit in there.

If you use filters regularly and want to exchange them with other Soviet lenses, you could build a do-it-yourself filter adapter for the common 40.5mm filters. Buy a Soviet 36mm slip-on filter and knock the glass out of that, then to buy a standard 40.5mm filter and knock the glass out of that as well, The smaller filter can be press-fitted into the back of the larger one, and the larger one is threaded so you can screw in any 40.5mm filter.
Click to expand...

Thanks for the tip...

Cheers,

Juan
 
OKAY! I just checked, the 19mm fits the I-10 and post-war Elmar but not the I-50. I will measure it and report back. It was enlarged over the I-10.
 
The I50 is 23mm, best I can figure. The 22.5mm filter is too small, and the 23.5mm screws in 1/2 turn. A 23mm filter would work.
 
I have not owned an I-22. The I-50 has the nice, easy to use aperture ring. Best I can suggest is to measure with a metric ruler. finding the C3 filter fit the Elmar and I-10 was dumb luck. Looking at the I-50, aND A BOX OF OLD FILTERS, i'LL END UP MAKING SOMETHING.
 
Brian Sweeney said:
I have not owned an I-22. The I-50 has the nice, easy to use aperture ring.
Click to expand...

AFAIK both of them have the same aperture ring... I guess the previous I-10 was the different one... Some people say the I-50 has a very slightly bigger front element, and that's why I can't be sure if 22 and 50 have exactly the same screw for filters... The problem is, when I get my I-22 in two days, I won't have any store here to check filter sizes that small because no one makes them... I am surprised no member is using old screw filters on them... Maybe back then (never?) no one made those filters? Why then place that screw there during decades? If size is 23, I can't see any old or new filter that size anywhere on the net...

Cheers,

Juan
 
I guess you could also get one of the Leica clamp-on hoods for the Elmar, and make something like a VOOLA ring from a piece of plastic that would allow you to turn the aperture together with the whole contraption:

400px-FISON_VOOLA.jpg


The VOOLA in front is for the Elmar of course, which has a tab for setting the aperture; for the Industar it would need to work through friction.
 
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