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

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: Re: [Leica] Re: Re: Leica 90mm f/4.0 Elmar C prices
From: Afterswift@aol.com
Date: Wed, 27 Aug 2003 03:56:55 EDT

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
- --
To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html

Replies: Reply from Jerry Lehrer <jerryleh@pacbell.net> (Re: [Leica] Re: Re: Leica 90mm f/4.0 Elmar C prices)
Reply from Karen Nakamura <mail@gpsy.com> (Re: [Leica] Re: Re: Leica 90mm f/4.0 Elmar C prices)