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09-10-2016, 07:09 AM   #1
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Jupiter 37A: Lens Mount?

So I bought a Jupiter 37A on eBay, and am a little bit curious about the description:

QuoteQuote:
The Jupiter-37A 135 mm f/3.5 - high resolution telephoto lens for a 35mm SLR with a M42 screw mount.
The letter "A" in the name of the lens means that lens has a removable shank and can be installed to the other camera system (M42, M39, Nikon, Pentax).
QuoteQuote:
Lens Mount: M42/Nikon F
Focal length: 135 mm
Maximum apeture: f/3.5
Minimum aperture: f/16
Number of aperture blades: 12
Focusing range: 1,2 m - infinity
Filter mount diameter: 52 mm
Weight: 410 gr
Length: 90 mm
The lens review database indicates that this lens is a T-mount lens, but what does these descriptions mean about the lens mount? M42? Any ideas?

Sincerely

09-10-2016, 07:42 AM   #2
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You can buy a T-mount to P/K mount adapter. I have a T-mount Kalimar that I did the same thing for. I think that limits you to only using manual focus and green button light metering, but it has worked well for me.
09-10-2016, 07:53 AM   #3
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QuoteOriginally posted by robgski Quote
You can buy a T-mount to P/K mount adapter. I have a T-mount Kalimar that I did the same thing for. I think that limits you to only using manual focus and green button light metering, but it has worked well for me.
T-mount and M42-mount lenses are manual aperture and focusing, but metering works as normal {effectively, your choices are Av or M mode}. Green button metering is needed only for K-mount lenses that preceded KA-mount, effectively the ones built roughly 1975-83.
09-10-2016, 08:38 AM - 2 Likes   #4
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Normally there is m42 mount on this lens. You need m42-PK ADAPTER to mount it on pentax camera.

09-10-2016, 09:11 AM   #5
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Yes, many of those Russian lenses are t-mount, but were typically shipped with M42 mounts on them for fitting to the Zenit cameras they were originally intended for.
09-10-2016, 10:00 AM   #6
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How to use t-mount, preset lenses.
09-10-2016, 10:32 AM   #7
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QuoteOriginally posted by Ontarian50 Quote
Yes, many of those Russian lenses are t-mount, but were typically shipped with M42 mounts on them for fitting to the Zenit cameras they were originally intended for.
Soviet lenses were never produced with t-mount. It's Tamron developed mount. Not M42x1 like in ZENIT cameras, for example.
T-mount is М420,75. Don't confuse with M42x1.

Jupiter 37A was produced with M42x1 adapter and (or) with adapter(s) for M391/45,2, KIEV cameras mount (N-mount) or for K-mount.



This lens had special mount or supplied with adapter for some special mounts - see above.

Last edited by ogl; 09-10-2016 at 10:34 PM.
09-10-2016, 10:58 AM - 1 Like   #8
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QuoteOriginally posted by ogl Quote
Soviet lenses were never produced with t-mount.
Well it works like a t-mount. As discussed in my page (link above) these -A lenses can be mounted with the camera fitting part of the t-mount so it is a swappable mount.

09-10-2016, 11:23 AM   #9
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QuoteOriginally posted by marcusBMG Quote
Well it works like a t-mount. As discussed in my page (link above) these -A lenses can be mounted with the camera fitting part of the t-mount so it is a swappable mount.
Do they have the same flange of the standard M42 or are they designed to work with a special adapter?

Sent from my Android phone, please forgive any possible typos.
09-10-2016, 11:46 AM   #10
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Not sure what you're asking. Here is a pic of a 37-A with a PK t-mount (mount section) all set for pentax.
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09-10-2016, 11:51 AM   #11
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QuoteOriginally posted by marcusBMG Quote
Not sure what you're asking. Here is a pic of a 37-A with a PK t-mount (mount section) all set for pentax.
Does this set focus to infinity and which adapter did you use?

Sincerely

Sent from my Android phone, please forgive any possible typos.
09-10-2016, 11:59 AM   #12
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According to the description you posted, the lens is a screwmount m42. You will need the m42 - k adapter to use it.
09-10-2016, 12:42 PM   #13
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QuoteOriginally posted by butangmucat Quote
Does this set focus to infinity and which adapter did you use?
Yes. PK t-mount.

QuoteQuote:
All these (t-mount) rings are two piece designs. There is a central collar, C in pic #8, which can be removed by unscrewing 3 small "grub" screws G located on the circumference of the ring. The main purpose of this is to be able to align lens and camera (particularly M42's) - loosening these three screws allows rotation of the ring against the collar. Then there are also some Soviet era lenses (Jupiter, Tair), pic #9, that use a t-mount style swappable mount, but without the collar. These normally have a -A designation in the name eg Jupiter 11-A, Tair 300-A. The end of the lens is machined like the collar. To swap mounts the collar is removed from a t-mount which can then be slotted on the lens and the grub screws tightened.
One detail to note: the interior collar is usually, but not necessarily, interchangeable between mounts. It is typically ~ 48mm in diameter, but some are not, like the M39 t-mount in the pics. The latter will not fit on the Soviet lenses.
Off my web page see link above for pics.

Last edited by marcusBMG; 09-10-2016 at 12:49 PM.
09-10-2016, 10:25 PM   #14
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It were 3 versions of Jupiter 37

Jupiter 37A - with changeable adapters - K-mount adapter at the photo



Jupiter 37AM and MC Jupiter 37AM - with cosmetic changes of body and lower weight (MC - with anti-reflective coating)




МС Jupiter-37К - with anti-reflective coating and K-mount


Jupiter 37A and 37AM have removable M421/45,5 adapter.


http://www.photohistory.ru/1207248189182251.html
http://radojuva.com/2011/02/obzor-jupiter-37a-otzuvu-yupiter/

Last edited by ogl; 09-10-2016 at 10:35 PM.
09-11-2016, 04:43 AM   #15
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QuoteOriginally posted by ogl Quote
Jupiter 37A and 37AM have removable M421/45,5 adapter.
Can I just use one of the "sit-flush" type M42 - K adapter? Will the flange focal distance allow infinity focus?

QuoteOriginally posted by ogl Quote
Jupiter 37A - with changeable adapters - K-mount adapter at the photo
Which adapter did you use?
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