I'm looking for an economical wide angle lens for my Pentacon 6 TL. The Zeiss Flektogon 50/4 still commands pretty serious money, at least if recent eBay sales are any indication. I've seen a lens called the Mir-38 which is a 65mm F3.5 that typically sells for less and is newer and it may do the job for me (at least for now). One thing I can't figure out is if the Mir-38 fits both the Kiev 60/88 AND the Pentacon 6? Do all these cameras have the same lens mount and back focus or are there differences I need to be aware of? Maybe I should just pony-up the money for a Flektogon? I'd welcome any thoughts or suggestions.