Archived posting to the Leica Users Group, 2004/05/07

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Subject: [Leica] Photar 25mm
From: frank.dernie at btinternet.com (FRANK DERNIE)
Date: Fri May 7 00:16:33 2004

I hope I am not teaching my grandmother to suck eggs,
but are you compensating the exposure for the
magnification? Macro is a massive pain without a TTL
meter to do the compensation.
Frank

 --- Max Weisenfeld <max_weisenfeld@verizon.net>
wrote: > I thought Stolze stops were fairly close to
f/stops
> ... Stolze 5 between f/4
> and f/5.6, for example.  The markings on the Photar
> relate to much smaller
> openings, and much less light passage.  I have run
> some casual tests, and
> the difference seems to be in the range of 6 stops
> (metered at 1/30 @ f/2.8,
> shot at 8 seconds at f/(or whatever, stolze)8).
> 
> I do not have access to Leica Manual 15th edition,
> so any help would be
> appreciated.
> 
> Max
> 
> 
> ----- Original Message ----- 
> From: "Marc James Small" <msmall@infionline.net>
> To: "Leica Users Group" <lug@leica-users.org>
> Sent: Wednesday, May 05, 2004 9:56 PM
> Subject: Re: [Leica] Photar 25mm
> 
> 
> > At 08:06 PM 5/5/04 -0400, Max Weisenfeld wrote:
> > >Any advice on using this lens?  When mounted on a
> bellows and Viso, the
> > >f-stops do not seem to relate to any meter I have
> ever found.
> > >
> >
> > Max
> >
> > These are not f/stops but, rather, are Stolze
> stops.  See the 15th edition
> > of the LEICA MANUAL for discussion.  Stolze stops
> are normal on most macro
> > lenses, be they Leitz/Leica Photars or Zeiss
> Luminars or Carl Zeiss Jena
> > Mikrotars.
> >
> > Marc
> >
> > msmall@infionline.net  FAX:  +540/343-7315
> > Cha robh b?s fir gun ghr?s fir!
> >
> >
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug
> for more information
> 
> _______________________________________________
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> more information 

In reply to: Message from max_weisenfeld at verizon.net (Max Weisenfeld) ([Leica] Photar 25mm)