I must admit that I have totally fallen in love with using these vintage analogue Russian lenses - I have a few Helios lenses now and my latest addition to my Russian collection arrived yesterday: An Industar-61 LZ 2,8/50mm.
I spent some time searching online for just the right one, and I must say that my search paid off... this lens is amazing, inspite of it's age it's in mint condition and very sharp. I almost couldn't wait to take it for it's first spin around our garden... one of the primary reasons I wanted this macro lens was to play around with it's star shaped aperture, and I must say that I'm definately not dissappointed :-)