Archived posting to the Leica Users Group, 2000/09/21

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Subject: Re: [Leica] HEXAR RF Limited with 50/1,2 in 2001 ?
From: Dante Stella <dante@umich.edu>
Date: Thu, 21 Sep 2000 15:37:02 -0400 (EDT)

I think you're comparing it to the wrong one.  I think it's designed to
mirror the 79-97 model.

Cheers
- ------------
Dante Stella

On Thu, 21 Sep 2000 Krechtz@aol.com wrote:

> In a message dated 9/20/00 6:22:29 PM Eastern Daylight Time, dante@umich.edu 
> writes:
> 
> << That takes the cake.  I bought a Summicron because I liked the 35/2 Hexar
>  lens... maybe demonstrates the depth of my depravity.  I always thought they
>  looked about the same - the Hexar maintains a perfect circle aperture to 
> f/4.5,
>  which is the only visible difference - the Summicron making a decagon (?) I
>  understand the optical formulæ to be identical.
>   >>
> 
> My '69 'cron, of which the Hexanon was supposedly a copy, does not exhibit 
> 2-line bokeh.  This is a good example of what can be so frustrating about the 
> process of predicting an empirical result based on theoretical 
> considerations, specifically as relates to the appearance of out of focus 
> areas.  That does not negate, however, the validity of the phenomenon known 
> as bokeh.  One simply has to accept that it is neither completely controlled 
> nor predicted by such factors as the optical formula or number of blades, 
> nor, for that matter, the shape of a circle formed by light on film.
> I bought the Hexar based upon a set of reasonable assumptions, as did you.  
> The intended use was to shoot at or near wide open, primarily in concert 
> halls.  Under those conditions, the camera was terrific, but the lens was 
> disappointing.
> 
> Joe Sobel
>