http://shop.lomography.com/en/jupiter-3-plus http://shop.lomography.com/en/ Not cheap at $649- but this is a fast Rangefinder lens with two triplets in it. About 1/2 the price of a new C-Sonnar, and a bit less than a 50/1.5 M-Mount Nokton. A near-mint J-3 runs $300, and you can figure that it will need a full CLA. This "Jupiter-3+" looks like the original Jupiter-3 design has been updated to close-focus to 0.7m. Chrome-plated brass is used rather than aluminum. I have modified a couple of original J-3's to focus closer, it is not hard to do. Basically a few cuts into the metal allows the close-focus position to exceed 1m and the focal length of the lens must be brought closer to 51.6mm. The engravings are different in the new J-3. I suspect the optics are the same, why change a winner. At $649- I expect KMZ quality control, which was much better than the late Valdai lenses. ALSO- with a change in the barrel, setting the rear triplet in closer will reduce the focal length to the Leica standard. This is certainly necessary to allow accurate focus from 0.7m to infinity. There are fast Sonnar formula lenses that I do NOT own, the Tanar 5cm F1.5, 500 made. That one would cost more than this new J-3+, and I already have the Nikkor 5cm F1.5. You could buy a few of these new J-3+ lenses for the price of the Nikkor. Both are chrome over brass, both focus close, and both made to the Leica standard. I have Five cherry-picked Jupiter-3's that span from 1950 through to 1984, two KMZ's with Zeiss serial numbers, a late 1956 KMZ, 1975 ZOMZ, and 1984 Valdai. Also a 1949 ZK Sonnar. I have a lot of Fast Sonnars. The KMZ Jupiter-3's are among the best 50/1.5's ever made by anyone.