Time for some more Soviet glas...
Here we have the Soviet Jupiter-37A 135mm f/3.5, which I personally don't think is
a particularly attractive lens...
Jupiter-37A (side).
...but even though it was made behind the Iron Curtain,
it is actually rather well constructed. It's pretty small
too, and a pleasure to use, I have to say.
Jupiter-37A (front), where the 12 aperture blades
forming almost a perfect circle can be seen.
But what's more important is that it can deliver photographically,
and sometimes truly blur the backgrounds into oblivion...
A yellow light bulb in an alley.
Shooting animals with manual lenses like this one can be, let's say, ...challenging

,
but I managed to get a decent shot of this jackdaw since the bird was rather calm.
Western jackdaw.
More flying things...
...the lens can even get an ok shot of an airplane way up in the sky
(but I want to point out I did quite a bit of noise reduction in Photoshop
on this one and the next, and please also note the photos have been heavily cropped; the planes were much smaller on the original photos)...
A flying metal can with wings.
...and one more...
...to be honest, I can't say I enjoy shooting airplanes, but I sometimes do it
when they fly high above me in order to try the resolving capabilities of the
lens I'm using (and myself

).
If the far away airplane is resolved with ok sharpness, the lens is probably
pretty sharp; at least that's my experience.
Another flying metal can with wings.
Flowers outside a store.
Lens used:
Jupiter-37AM 135mm MC f/3.5, which I also can warmly recommend

.
Note though that it's vintage and fully manual, but it can nevertheless make some quite impressive shots.