Panagor Auto Tele 200mm f/3.5 (M42)
Thanks for posting this. I think this lens is an unknown gem for those who like manual focus and iris. My copy has a quite loose aperture ring which moves when knocked. I've used it on a Nikon 1 V1 and a Sony A7. Sample image below is (I think) at f8 or f11 which is what I normally use this lens at.
|Blue and yellow in water by fireplace33|
from Ink and water
|Kylmä joki kopio by Kaappo|
from Shutter speed 1/25 or slower
|WR_2.8_13 copy copy by photoprof|