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Re: [OM] mount mod: nikon/canon to OM

Subject: Re: [OM] mount mod: nikon/canon to OM
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sun, 21 Aug 2011 15:39:19 -0400
Register distances in mm - M42, 4/3, Micro 4/3

|------------M42-45.46------------------------>|
|
|------------4/3-38.58----------------->|<6.88>|
|
|------Micro-4/3-20->|<-----------25.46------->|


According to the specs I have, both of you should be having some 
difficulty getting to infinity.  There seems to be some confusion 
whether the M42 register distance is 45.46mm or 45.50mm but, in any 
case, the difference between the 4/3 and M42 doesn't quite reach 7mm and 
certainly not 8mm.

Chuck Norcutt


On 8/21/2011 3:07 PM, Chris Trask wrote:
>>
>> As added information, the flange-to-flange thickness of the Fotodiox
> adapter
>> is 7mm, excluding the bayonet length.
>>
>
>      Mine is 8.0mm.  Judging from the picture in the eBay listing, I would
> say that the one I just bought from India is in the order of 1.5mm, same as
> the depth of the locking recess on this one.  We shall soon (3-4 weeks)
> know.
>
> Chris
>
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