Archived posting to the Leica Users Group, 1999/10/01

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Subject: RE: [Leica] Rangefinder Baseline
From: Greg.Chappell@bankofamerica.com
Date: Fri, 01 Oct 1999 11:23:56 -0500

Then well, yes, sort of! At least for my M6 Classic(any anyone elses) 57 vs
49 is longer in my book.

- -----Original Message-----
From: Marc James Small [mailto:msmall@roanoke.infi.net]
Sent: Friday, October 01, 1999 10:34 AM
To: leica-users@mejac.palo-alto.ca.us
Subject: [Leica] Rangefinder Baseline


At 08:29 AM 10/1/1999 -0500, Greg.Chappell@bankofamerica.com wrote:
>I believe with the 1.5 magnification in the IIIf and IIIc rangefinder it's
>effective rangefinder base is actually LONGER than an M2, M4, M5, M6
>Classic. If it's not long enough, they never should have made one for the
>"M"! I cannot remember if the 1.5 magnification is in the IIIa.

Well, no.

The LTM cameras had a 38mm baseline with a magnification of 1.5X, so the
effective distance was 57mm.  The Leica IV -- the prototype for the M
cameras -- had a 60mm baseline with a magnification of 0.9X, for an
effective baseline of 54mm.  All of the M's have a real baseline of
69.25mm;  with the various magnifications used, the effective baselines are
between 49.86mm and 63.71mm.  

The real winner was the early Contax I, with an effective baseline of
92.7mm.

I am still seeking the dispositive figures for the Retina, Ektra, and
Prominent.

Marc

msmall@roanoke.infi.net  FAX:  +540/343-7315
Cha robh bas fir gun ghras fir!