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Jupiter 11 ZM39 Aperture Ring(s)
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PostPosted: Mon Jan 24, 2011 5:21 pm    Post subject: Jupiter 11 ZM39 Aperture Ring(s) Reply with quote

Does anyone know whether the two ring system came later or before the single step-less ring? Production early on was at KMZ and then shifted to KOMZ. All of the KMZ labeled Jupiter 11s that I've seen have 2 rings but the earliest KOMZ have the single ring and then they adopt 2 rings. I can't seem to find any consistency. Anyone know for sure?


PostPosted: Fri Jan 28, 2011 7:51 am    Post subject: Reply with quote

There is a preset Jupiter 11?
Haven't seen one .. i have the one with one ring in alu finish.


PostPosted: Fri Jan 28, 2011 1:49 pm    Post subject: Reply with quote

Yes there are a few different body designs:
The oldest by KMZ 1959:

Note the two ring preset system and the thinner ridges of the focus ring. Very tair 11ish.

Early KOMZ:

One ring. Thicker ridges of focus ring.

Later KOMZ (I think?):

Two rings.


PostPosted: Fri Jan 28, 2011 2:03 pm    Post subject: Reply with quote

O this is the SLR version.
I have the RF one .. much smaller.


PostPosted: Sat Jan 29, 2011 12:07 am    Post subject: Re: Jupiter 11 ZM39 Aperture Ring(s) Reply with quote

themoleman342 wrote:
Does anyone know whether the two ring system came later or before the single step-less ring?


There's no production timeline being mentioned on the zenit camera site, but it sounds like production was started at KMZ and KOMZ joined in later. I would assume that the one ring models preceded the two ring ones - perhaps it was a shortcut in switching production from rangefinder lenses to SLR lenses. But I'm just speculating - I didn't even know a one-ring Jupiter-11 model existed for SLRs.


PostPosted: Sat Jan 29, 2011 4:34 pm    Post subject: Reply with quote

Mine is of the third type.


PostPosted: Sun Jan 30, 2011 2:20 am    Post subject: Reply with quote

Hi,

This isn't strictly on point, I suppose, but I thought it might make sense to mention here that the oldest SLR Jupiter-11 is probably the slim version - very similar to the rangefinder version - manufactured by KMZ. Mine has a 57XXXXX serial number, the model name in Cyrillic, the red "P" symbol, and the focal length in cm. And it has a simple one-ring manual aperture mechanism.

One occasionally reads that all "slim" Jupiter-11s are RF lenses, but the slim SLR version does exist (although it doesn't seem to turn up very often).

Cheers,

Jon