Archived posting to the Leica Users Group, 2000/09/17

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Subject: Re: [Leica] Which Leica M6 should I buy?
From: "Tom Schofield" <tdschofield@email.msn.com>
Date: Sun, 17 Sep 2000 12:07:02 -0700
References: <B5EA3216.9034%jbcollier@home.com> <39C5051D.2E59BFA0@rabiner.cncoffice.com>
 
Mark,

Read Erwin's "more than you ever wanted to know" article on rangefinder
accuracy.  (Or even just the concluding paragraphs!)  Apparently, increasing
focal length is more of a problem to rangefinder accuracy than wider lens
openings. The 135 APO is more critical to focus with a rangefinder than the
Noctilux.  Leica's press release says that the 0.58 is suficient for the
Noctilux and 90 APO.  Erwin's paper says even the 0.72 is pretty marginal on
the 135 APO.

> I'm not mathematician or physicist but I'm surprised they would have
frames for
> the Noctilux (which I don't got) and not for the 135 3.4 apo (which I do
got -
> and like)
> I would think the trigonometric situation would be just as adverse,
> course they wouldn't let be get NEAR trigonometry darn it!
> Markwr
In reply to: Message from John Collier <jbcollier@home.com> (Re: [Leica] Which Leica M6 should I buy?)
Message from Mark Rabiner <mark@rabiner.cncoffice.com> (Re: [Leica] Which Leica M6 should I buy?)