Voigtlander Adaper Ring

[wilfredo]

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I just purchased (mail order) a Voigtlander Adapter ring to use on my CV 75MM lens on a Leica MM, but this adapter is for a 28mm/90mm lens. Will there be any issues with it? I hadn't noticed when I placed the order that it was for a specific focal lengths. The adapter ring I currently use is a generic one size fits all.

 

Thanks!

[TomB_tx]

It will bring up the wrong frame lines, but focus and such are fine. However lens coding may be an issue with the wrong frame selected. (But should only affect the EXIF info, as coding has little effect on longer lenses.)

I've had excellent results from my CV 75. It has replaced my 90 TE in my kit.

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[Stealth3kpl]

Which frame lines does it bring up? I think you need a 50 to bring up the 75 frames lines. If you are using liveview or a separate optical finder you won't have any issues (bar paralax errors if the latter).

Pete

[wilfredo]

I will try it out when I get home this evening. I had the adapter delivered to my office. This info is helpful, thanks!

[250swb]

Agreed, you need the 50-75 to bring up the 75mm frame lines.

 

Steve

[dugby]

I bought the Rayqual adapter that is now on the cameraquest dot com site as the Voigtlander adapter is no longer being manufactured.

 

As other have stated your adapter will select 28/90 frame lines.

 

You can still correctly code the adapter by selecting the correct 6bit code

[peterbengtson]

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I bought the Rayqual adapter that is now on the cameraquest dot com site as the Voigtlander adapter is no longer being manufactured.

 

As other have stated your adapter will select 28/90 frame lines.

 

You can still correctly code the adapter by selecting the correct 6bit code

 

Not true, the six bit code works in conjunction with the frame line selector not overriding it. if you think of the frame line selector as 3 more bits of info the combination is a 7.5 or 8 bit code.

[wilfredo]

Live and learn. I will return the adapter. The Fotodiox (generic) adapter I bought originally works fine producing the proper frame lines in the viewfinder for the 75mm CV, and it even has indentations for coding. The build of the Voigtlander is obviously superior but I did not noticed improved sharpness with it when I tried it. The correct adapter from Voigtlander is out of stock at Adorama where I bought the wrong one. I'll just send it back for a refund. Someone mentioned the adapter for the 75mm it is no longer in production from Voigtlander, too bad.

[duckrider]

I prefer to buy 28/90er Adapters, because they choose the most far position of frame selector.

For other frames I file off a bit of the adapter's frame selector cam:

When You take a look at Your M mounts of different focal lengths, You'l notice that 50/75 has a bit less and 35/135 more less of this cam length.

 

6bit coding has nothing to do with the frameselector.

[dugby]

Not true, the six bit code works in conjunction with the frame line selector not overriding it. if you think of the frame line selector as 3 more bits of info the combination is a 7.5 or 8 bit code.

 

 

Sorry, however my experience is different to yours.

 

Having manually coded (using a Sharpie) some of my lenses (incorrectly) the bit sensor reads the 6-bits and M240 recognises the lens by the 6-bits irrespective of which frame lines were selected according to the adapter flange.

Edited November 21, 2014 by dugby

[pfhrased]

Not sure if you've encountered this, but the fotodiox adapter I had threw out my RF calibration.. the voigtlander one didn't.

[wilfredo]

Not sure if you've encountered this, but the fotodiox adapter I had threw out my RF calibration.. the voigtlander one didn't.

 

That's a scary thought. Did this happen over a period of time?

[250swb]

Sorry, however my experience is different to yours.

 

Having manually coded (using a Sharpie) some of my lenses (incorrectly) the bit sensor reads the 6-bits and M240 recognises the lens by the 6-bits irrespective of which frame lines were selected according to the adapter flange.

 

The OP has a Leica MM and the connection between the frameline and the code is absolutely necessary for automatic recognition. As I sold my M240 I can't now comment if the M240 does it differently but I never thought it did, yet in any case you are wrong about the M9/MM.

 

Steve