Today my Industar-61-LZ arrived. It's an M42 lens from the former Soviet Union, and it's said to be the best FSU lens ever. Well, I don't know, and I don't know the value of such a title, because I own this lens about two hours now. But I bought it because of it's weird bokeh highlights when used at f5.6-f8. The iris is star-shaped in that aperture range, so it delivers star-shaped highlights. And I shot this example, just to show you!
Bokeh highlights of the Industar-61 @ f/5.6