Offered here first. I made this lens out of Four J-8's. It is one of the best J-8's that you will run into. Focus is particularly smooth on this one. I used a 3M sheet designed for polishing glass on the aluminum mount to get it that way. For sale is a 1952 KMZ 5cm F2 Jupiter-8 with new front-element and mounted in a much later chrome Leica Thread Mount focus module, EX condition. Glass is near perfect- inner groups are original and look like German glass, as used in my KMZ J-3’s of this period. I disassembled this lens, flood-cleaned the aperture blades, lubed the helical, and custom shimmed it for the Leica. The aperture blades look good, focus is very smooth. I replaced the original front element which was scratched with one from a 1957 lens. I tried out two different front elements to get the lens to be as sharp as it is now. It is one of the best J-8’s that I have used. This lens is optimized for wide-open and close-up use on the Leica. I the example shots are with my M9. It focuses properly to infinity even at F2. Robert Chisholm posted an article on two Jupiter lenses that I worked on here: JUPI-WHAT? Shooting Jupiter Lenses on the Leica M9 by Robert Chisholm | STEVE HUFF PHOTOS Price: $140 shipped within the United States Priority Mail, $150 anywhere via first class international, $160 anywhere else via International Priority Mail. Paypal, Personal Check, Money Order. I reserve the right to hold shipment until check/MO clears. Return policy: returns must be made within 10 days, refund for the price of the item will be given after receipt. Postage cost is not refundable. If you need an IR/UV filter, I will sell the B&W 40.5mm filter for an additional $35. Filter only offered with the lens. At F2 on the M9: 100% crop F2: 100% crop. I nailed the shim on this lens. Distance at F2: 100% crop: Infinity at F4: 100% crop F2: Fence Slat test.