DNG
Film Friendly
Exactly! And have the benefit of dealing with an even older camera....
You can get a Genuine Contax overhauled... here Zeiss Ikon Contax Camera Repair, but it will cost around $400, and have a waiting list 3 years long... BUT... it will come back like new or better...
Henry will not repair FSU Kievs!
So, buy a Genuine Contax II or IIa, CHEAP, and send him an email to get on the waiting list.