Archived posting to the Leica Users Group, 2003/08/27

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Subject: Re: [Leica] Re: Re: Leica 90mm f/4.0 Elmar C prices
From: Jerry Lehrer <jerryleh@pacbell.net>
Date: Wed, 27 Aug 2003 09:10:41 -0700
References: <136.23958be7.2c7dbe47@aol.com>

BR

What a dreamer!  Read Huygens Law of Diffraction, then get back to
me.

Jerry

Afterswift@aol.com wrote:

> In a message dated 8/27/03 12:23:07 AM Pacific Daylight Time,
> jerryleh@pacbell.net writes:
>
> > You really can't reduce diffraction.  It is a physical function.  Look up
> >  Huygens Principal of Diffraction.
> >
> >  Jerry
> ------------------------------------
> That's very true, but isn't it possible to design a lens system in which
> successive lens elements correct for the diffraction produced by the initial small
> entry aperture. That is, the scattered light rays are recombined and
> refocused as though a wider aperture lens had been used?
>
> br
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Replies: Reply from "animal" <s.jessurun95@chello.nl> (Re: [Leica] Re: Re: Leica 90mm f/4.0 Elmar C prices)
Reply from "Jon" <jon.stanton@comcast.net> (Re: [Leica] Re: Re: Leica 90mm f/4.0 Elmar C prices)
In reply to: Message from Afterswift@aol.com (Re: [Leica] Re: Re: Leica 90mm f/4.0 Elmar C prices)