Originally posted by figmental1978 Voe, Jay...any comments on the Jupiter-9 wide open?
Some people say that Jupiter-9 is soft at f/2. I think it is still sharp but it lacks contrast. The resolution is there if you increase the contrast in postprocessing.
Also even without postprocessing I don't think it is that bad wide open.
Bellow are some crops from wide open to f/2.8:
Now there is a big chance that the 77Limited was not very well focused but you can get the idea about the sharpness of the Jupiter-9 wide open.
Crops:
77 Limited @ f/1.8
77 Limited @ f/2
Jupiter-9 @ f/2
77 Limited @ f/2.8
Jupiter-9 @ f/2.8
Another thing I like about all the Russian/Soviet lenses is that there is no CA.
Hope it helps.