Canon RF lenses and Voigtlander M39 ->M adapters

[caffeineshutter]

Hi All,


I own two of the VC M39 to M adapters. My question concerns the (overwhelming?) tendency of the adapter to block the focus ring on many lenses, preventing them from focusing to infinity.

Will these adapters cause the same problem with the black Canon LTM lenses? I know the VC adapters block my Elmar 50/3.5 lens, but...certainly the black Canon RF lenses are designed differently. Are they also susceptible - with their infinity lock/tabs - to being blocked by the VC adapter?

Thanks,

CJ

 

[Al Kaplan]

The Leitz adapters are cut out to allow you to unlock the infinity lock. I'm not sure about the VC adapters but it would be easy to file them to match the Leitz adapters. You'd have the same problem with Canon, Nikon, and Schneider lenses from that era.

 

[caffeineshutter]

Hm I see. Thanks Al. Following on your post: How much filing? Is there a PDF of a pattern posted somewhere? Maybe it's not even necessary; I don't have the parts in question in front of me. Anything I need to be mindful of when performing this procedure?

Lastly, to Al and everyone else: What about the adapters from Heavystar? Do they block? Moreover, are they worth the ~$20 gamble, knowing about the potential registration problems?

I haven't located a place to purchase the other, Japanese adapters by...can't recall the name...begins with an 'M'.

 

[Al Kaplan]

Go to google.com. Just above the multi-colored google logo on the upper left click on Images. Type in "Leitz M adapter". Mixed in with a bunch of other photos of various adapters are some thread mount to M adapters. You can see where the flange on the front of the adapter is narrower along the bottom and part way up one side so the pin has a place to go when you press the lens lock button.

Neatness isn't critical but while you're at it take off just a bit more metal just in case the next lens you want to use on it requires it.

I have no experience with any modern third party adapters but the old Accura and Spiratone adapters from the 1960's work just fine. ($5 each, set of three for $10, plus 35 cents shipping!)
What we really need is a time machine!

 

[payasam]

CJ, there are two types of CV adapters. The earlier type had a cut-out for the infinity lock, the newer type has no cut-out and can be coded for the M8. See www.cameraquest.com. I have two adapters from www.fedka.com which don't block.