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Re: [OM] E-1 lenses resolution vs. conventional lenses - fact or hype?

Subject: Re: [OM] E-1 lenses resolution vs. conventional lenses - fact or hype?
From: Moose <olymoose@xxxxxxxxxxxxx>
Date: Sun, 12 Oct 2003 15:15:16 -0700
Joe Gwinn wrote:

.........
The bounding case is to draw a cross-section of the lens and imager, with the 
cross-section cut on a diagonal of the sensitive surface (image frame), so we 
can see right out to the corners of the frame.  The cross-section plane must 
include the optical axis of the lens.  Draw two lines, from the extremes of the 
back lens to one of the frame corners.

This doesn't work with retrofocus wide angle designs, which are the majority of the problem. With the back focal node behind the back element, this method will understate the angle of incidence problem.

Moose



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