Archived posting to the Leica Users Group, 2003/02/20

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Subject: RE: [Leica] Digital Rangefinder in F Mount by Nikon - Rumor Mongering All over
From: "Sam Krneta" <skrneta@mindspring.com>
Date: Thu, 20 Feb 2003 22:02:34 -0600

Austin or anyone with a Canon,

What is the measurement of the Canon lens mount? ID I don't have my calipers
handy but Nikon measures 1-3/8". My eyes are tired but that's pretty close.

Sam 

- -----Original Message-----
From: owner-leica-users@mejac.palo-alto.ca.us
[mailto:owner-leica-users@mejac.palo-alto.ca.us] On Behalf Of Austin
Franklin
Sent: Thursday, February 20, 2003 9:35 PM
To: leica-users@mejac.palo-alto.ca.us
Subject: RE: [Leica] Digital Rangefinder in F Mount by Nikon - Rumor
Mongering All over

Hi Christopher,

> With the new Canon 1Ds and the excellent reviews, Nikon has to be hurting.

I believe Nikon is avoiding a fundamental problem, and that is their lense
mount.  It is possible that it is too narrow to provide adequate coverage,
without vignetting on the digital sensor, on a full frame sensor.  This is
why Contax redesigned their lense mount, and made it wider.  Unlike film,
digital sensors are recessed into wells, and therefore there is a maximum
angle that light can enter the well before causing vignetting due to the
well depth.  Film does not have this issue.

I have heard that the Canon full frame cameras have some vignetting with
their wide angle lenses, which was to be expected.

Austin

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