Archived posting to the Leica Users Group, 2002/04/22

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Subject: [Leica] RE: Leica Users digest V22 #190
From: "Langhans, Aram" <araml@naches.wednet.edu>
Date: Mon, 22 Apr 2002 12:56:03 -0700

Thanks, Doug, for trying this out.  I'll start looking for a 3 or 4 or the
series VII equivalent.  You said no image quality data "yet".  I didn't
expect that thorough a trial, but I won't say "no" to it if you have the
opportunity.

Thanks again

Aram


> Date: Sun, 21 Apr 2002 21:37:18 -0700
> From: Doug Herr <telyt@earthlink.net>
> Subject: Re: [Leica] Elpro and 180/4
> Message-ID: <B8E8E18D.48A1%telyt@earthlink.net>
> References: 
> 
> on 4/20/02 6:02 AM, Aram Langhans at langhans@yakima-wa.com wrote:
> 
> > Many of you told me that the 180/4 is a good candidate for 
> an Elpro.  Which
> > one(s) should I get?  Which one will take off where the 
> lenses close focus
> > point is and get me even closer w/o much overlap?  Ane w/o 
> much loss in
> > quality.
> > 
>  
> I did a crude test of the ELPRO lenses on the 180mm f/4.0 Elmar-R this
> weekend, by focussing on a plastic ruler with the ELPRO 
> lenses attached.
> The flaws in this test include the non-100% viewfinder of the 
> SL but for a
> first approximation it will do.  I used earlier Series VII 
> ELPRO lenses with
> a cheap adapter from a swap meet junk bin to fit the ELPRO on 
> the E55 lens.
>  
> The ELPRO VIIb (ELPRO 4 in E55-ese) with the lens at infinity gives an
> object field about equal to that of the 180mm lens alone at 
> the minium focus
> distance (longer than the plastic ruler, however).  With the 
> same ELPRO and
> the 180 at its minimum focus distance, the long side of the viewfinder
> showed ~120mm of ruler.
>  
> The ELPRO VIIa (a.k.a. ELRPO 3) on the 180 with the 180 at 
> infinity showed
> about 120mm of ruler in the viewfinder, and just over 70mm in 
> the viewfinder
> at the minimum focus distance.
>  
> Preliminary conclusion: ELPRO 3 & 4 with the 180mm Elmar-R 
> will provide a
> wide range of close-up options with minimal gaps or overlaps 
> to something
> approaching 1:2 reproduction ratio.  Sounds handy.  No image 
> quality data
> yet.
>  
> Doug Herr
> Birdman of Sacramento
> http://www.wildlightphoto.com
> 
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