Despite its age, the lens renders very nice pictures with good tones; I especially like the black & white pictures from it. Lots of details in the captures. The most amazing thing is that this lens is very sharp, to the corners, on APS-C sensor. Even at f1.5 wide open, the corners are very respectable. This is something I didn't expect.
This lens makes me want the A7 even more.
All pictures below were taken with NEX-6 & Jupiter-3 5cm f1.5. Most of them stopped down to f8.
Bokeh and flare test @ f1.5