Field of view: 18 ° 30 ′
Frame size: 24 × 36 mm
Number of lenses / groups: 4/3
Working distance - 45.5 mm
Aperture ratio: 1: 4
Aperture scale limits: 1: 4–1: 22
Aperture blades - 12
Aperture adjustment - stepless
Aperture preset - yes.
Near focusing limit - 1 m
Lens to camera connection - M39, M42, H-mount, K-mount.
Filter Mount Location: Front
Resolution according to TU (center / edge): 42/29 lines / mm
Weight - 324 g
You will additionally need an adapter in any case.
Type Brand Link to adapter
SLRs
Nikon Better look for KP-A / N
Canon M42-Canon EF
Sony M42- Sony/Minolta
Pentax M42-pentax K
Mirrorless
Sony M42-NEX
Olympus/ Panasonic M42-m 4/3
Fuji M42-FX
Nikon M42-Nikon 1
If you are just going to look at something with a 135 mm FR, then it is better to pay attention to Jupiter-37A. This lens is a direct descendant of Jupiter-11A. It is made according to the same optical scheme and is structurally similar. The difference is a little more aperture - f3.5 versus f4.
I would not say that Jupiter 37 is much better than Jupiter 11.
But, here is just a unique situation when you can get the most of everything without spending any additional money or time on searches.
A lot of 37 Jupiters were released and their offer is now great, and the prices for such a good lens are disproportionately low.
If you already have Jupiter-11A, then I recommend using it and not bother replacing it with the 37th one. You probably won't notice the difference.
If you want a significant difference in aperture ratio, then you need Tair-11A 2.8 / 135.
Thanks to the interchangeable tail, Jupiter-11A can be successfully used on Nikon DSLRs. What you need to do for this - read here.
That's all for me. Don't get sick and good luck.