[butangmucat]

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

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).

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

[robgski]

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.

[reh321]

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.

[Medex]

Normally there is m42 mount on this lens. You need m42-PK ADAPTER to mount it on pentax camera.

[Ontarian50]

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.

[marcusBMG]

How to use t-mount, preset lenses.

[ogl]

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 М42×0,75. Don't confuse with M42x1.

Jupiter 37A was produced with M42x1 adapter and (or) with adapter(s) for M39×1/45,2, KIEV cameras mount (N-mount) or for K-mount.



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

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Last edited by ogl; 09-10-2016 at 10:34 PM.

[marcusBMG]

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.

[butangmucat]

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.

[marcusBMG]

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.

[butangmucat]

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.

[paulh]

According to the description you posted, the lens is a screwmount m42. You will need the m42 - k adapter to use it.

[marcusBMG]

Does this set focus to infinity and which adapter did you use?

Yes. PK t-mount.

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.

[ogl]

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 M42×1/45,5 adapter.


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

[butangmucat]

Jupiter 37A and 37AM have removable M42×1/45,5 adapter.

Can I just use one of the "sit-flush" type M42 - K adapter? Will the flange focal distance allow infinity focus?

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

Which adapter did you use?