Re: [OM] Photos from Bessa

[Wayne Harridge]

> Stephan@xxxxxxxxxxxxxx <> wrote:
> 
> the linking of the rangefinder... is fragile, since there are many  
> scopes of problems
> 
> - need for an helicoid on the lens
> - accuracy of the threadmount flange
>

Actually, I don't think the thickness of the M to thread adapter is really 
critical. From what I understand the rf cam is part of the lens construction 
and bears directly on the cam follower of the body, so the adapter doesn't 
contain any rf linkage - correct ?  If the adapter is a bit thinner than spec 
you won't be able to focus quite as close, you'll be able to focus a bit past 
infinity and the distance scale on the lens will not be accurate *but* the rf 
focussing should still be accurate.  Of course if the adapter is a bit thicker 
than spec you won't be able to focus to infinity (bummer !) but the rf will 
still be accurate at shorter distances.

...Wayne



Wayne Harridge

http://lrh.structuregraphs.com
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