Archived posting to the Leica Users Group, 1997/11/19

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Subject: Re: Would Perfect Lens have Bokeh?
From: Leikon35@aol.com
Date: Wed, 19 Nov 1997 19:01:10 -0500 (EST)

<< 
 At 05:53 AM 16-10-97 -0400, Marvin wrote:
 [snip] >   Question for all the technical minded Luggers:

 > IF YOU WERE TO MAKE A PERFECT LENS - that is - one without any
 > aberations at all  =  would that lens have no bokeh regardless of if it
was 
 > a Leica, Canon, Nikon or whatever - OR is the bokeh caused by those
 > imperfections that we call aberations?  ****************************
 >
======================================================
 >> Dan wrote: 

 My understanding is that the term "Bokeh" refers to the way the out of
 focus parts of the photograph appear.  You cannot eliminate Bokeh without
 eliminating the out of focus portions of the picture.  The Bokeh can either
 look nice, or not so nice, and is determined in part by the mechanical
 construction of the lens (aperture blades) and to the extent that certain
 aberations (I believe spherical is the main culprit) have been controlled.
 
 Dan C.