The factory had to strictly adhere to a quota system, regardless of quality. Cameras were tested after final assembly, and those that didn't obviously work were simply scrapped, but they were never deducted from the production quota total but if the quota had not been reached these rejected cameras were included in the factory production.
Depending on the luck of the draw, a camera could be of sufficiently close tolerances to be of good quality and would be very reliable. The opposite was also true. Production quality slowly deteriorated until, in 1981, a delegation from the Soviet industrial authority arrived at the factory and condemned the entire production of the last two months, which was scrapped.
Peter Henning, the Zeiss historian, reports: " In the Soviet Union a network of specialised workshops was developed in order to handle problems of this kind. First you bought your camera at a low socialistic price. Then you realised that the camera did not function fully - you had to visit the specialised workshop. After paying this part of the affair as well, the total cost was about the same as a similar type of camera in the west."
Production of the Kiev / Contax derivatives was finally halted in 1986.