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Re: [OM] one good thing...

Subject: Re: [OM] one good thing...
From: Winsor Crosby <wincros@xxxxxxxxxxxxx>
Date: Mon, 28 Jan 2002 13:11:13 -0800
 > Olympus claims their new lens design gets around this problem
 by moving the
 exit node farther from the film plane, thus making the angle
 of attack less
 acute. This doesn't sound right -- the angle at which the
 light rays strike the
 film is, by simple geometry, unavoidably linked to the lens's
 angle of view.
 How can you make the angle less-acute without simultaneously
 reducing the angle
 of coverage?

Isn't this essentially a "retro-focus" lens?  Doesn't the XA's
35mm lens fit this definition?  Most zoom lenses are also of
this design by their very nature.
AG-inquiring minds want to know-Schnozz


The XA lens is the opposite of a retrofocus design. Retrofocus designs allow a lens placed too far from the lens(because of the SLR mirror) to come to focus on the film place. The XA lens was designed to be too close to the film for compactness and still focus on the film plane.
--
Winsor Crosby
Long Beach, California

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