88 TTL were the same cameras as the Salyut S, but with added hot shoe for flash synchronization. Those cameras were equipped with Volna-3 lenses out of the box. The difference between those two models was that Kiev 88 TTL had a TTL metering prism, where Kiev 88 had a non-metering prism. Since those cameras had interchangeable viewfinders and prisms, the real difference was only what accessories were present in the box when you bought the camera, but the cameras were the same. Kiev 88CM The camera is perhaps the biggest upgrade since Salyut, because it replaced the original screw-type lens mount with the Pentacon Six lens mount, expanding the options for lenses. Kiev 90 This camera is extremely rare (around 200 units made). It shoots 6x4.5 negatives, in contrast to previous Kievs using 6x6 formats. It offers aperture-priority automatic, semi-automatic and manual modes of shooting. It offers interchangeable lenses, focusing screens, viewfinders and film magazines. It uses the Pentacon Six lens mount and has Volna-3 lens out of the box. The shutter speeds range from 4s to 1/1000s + B. Pentacon Six based Kiev medium format cameras The other family of Kiev medium format cameras are based on Pentacon Six and probably inspired by Zenit 70. Those cameras look like enlarged 35mm SLRs. They use the same breech-lock lens mount as Pentacon Six, allowing them to use all the lenses made for that system, including, but not limited to, lenses made by Meyer Optik Görlitz, Carl Zeiss Jena, Schneider Kreuznach (for the Exakta 66), Kilfitt and others in addition to lenses made by Arsenal Factory. These cameras have a simpler frame-advancement mechanism than the Pentacon Six but it is often poorly adjusted at the factory resulting in incorrect frame spacing. This problem can be fixed. Kiev 6S This is a 6x6 SLR which can use both 120 and 220 film. Shutter release button is located on the left of the camera. It has interchangeable viewfinders (waist level viewfinder on pentaprism). It uses horizontally running focal plane shutter with speeds ranging from 1/2s to 1/1000s + B. By default it was delivered with Vega-12 lens. Kiev 6S TTL Almost the same camera as the original Kiev 6S, but had a different front plate - the Kiev logo is now written in chrome on black background. It offered a CdS TTL metering prism out of the box. Kiev 60 TTL The