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09-28-2016, 11:30 AM   #16
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I glued a cheap M42 adapter with the spring latch removed (what gets stuck on the cheapies) to my Helios 44-2 for convenience. Works great.

I also converted a couple of old Leitz (Leica) lenses with a Leitax type of mount replacement. They also work well on my Pentax bodies. The mount change is necessary as a result of flange distance which makes an adaptor incompatible without correction (glass).
I bought the mounts on eBay for less than the true Leitax ones and they work well enough.

09-28-2016, 11:56 AM   #17
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QuoteOriginally posted by interested_observer Quote
The old Contax Zeiss lenses that were discontinued in 2005, are a relative bargain. $200 to $300 for a Contax C/Y lens (in the mm mount variant) updated with a K mount kit (~$100) gives you a Zeiss lens that is currently unobtainable new - and if it was it would go for $1200+

They have adapters for the Leica R mount as well.
Thanks! I've got to get me some of these.
09-28-2016, 04:02 PM   #18
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Join Date: Mar 2012
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As noted before most of the adapters have an optical element to allow focus at infinity. However many times the same adapters are available without the glass. These versions are essentially a very short extension tube and are suitable only for close-up or macro work. On some of the Fotodiox adapters the lens can be removed so you can have it both ways. A glass-less Minolta MD to K mount adapter allows me to use my Minolta bellows and lenses for macro work.

With the optical element there will be some loss of image quality. Unless you are a working professional you should be taking photos mainly for your own enjoyment and you may find the quality loss totally acceptable. Only you can answer this for yourself.

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