Homemade conversion from Jupiter 8 M to Industar 61 LD In November 2005 Mr. Nzeeman from Belgrad replaced the broken cell of his Jupiter 8M by a new one from an Industar 61LD . Here is how it was done: He unscrew the J-8M nucleus cell (2) from the Kiev mount (1) -Pic 1- Took an I- 61 LD and removed the bottom screw (4). Unscrewed the cell (2) from the FED mount (1), and removed the nut (5). -Pic2- -BOTH CELLS HAVE IDENTICAL MONTING THREADS.- By careful use of the spacer/adjuster rings (3), =Pics 1&2= he found the right infinity point of the I-61 when mounted in the Kiev coupling mount. Alas a new objective for the Kiev camera! nzeeman_nameezn@yahoo.com