Originally Posted by Anupam Basu
I have a Russian "Vega-11U" (marked "Вега-11У") 50mm lens. It has a f/2,8 maximum aperture, has rounded aperture, and according to its passport, has 5 elements. From what I can see through the lens, it may have as many as 8 aperture blades.
Haven't used it for macrophotography, only for printing in colour. The prints it made were excellent, and can give the more expensive El-Nikkors a run for its money It should do well as a macro lens, but for such an application, you might find its f/11 minimum aperture somewhat limiting.
I got it on eBay for US$11.