Archived posting to the Leica Users Group, 2000/04/19

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Subject: Re: [Leica] Question about minimum focus distance
From: Dennis Painter <dpainter@bigfoot.com>
Date: Wed, 19 Apr 2000 21:49:58 -0700
 
Michel LE wrote:
> 
> Hi,
> 
> I've noticed that  the minimum focussing distance for rangefinders (Hexar,
> Leica or Bessa)  is around 70cm, for a 35mm lens, while on SLRs it is in
> the range of  30cmm or 40cm.
> 
> Is this limitation induced by parallax error involved with rangefinder
> mechanism or is there any optical justification for this ?
> 
> Thanks
> 
> Michel Le

Interesting question.  I think it must be a parallex issue since Leica
made the DR Summicron and it focused and framed to 19 inches, with the
optical attachement. 

Dennis