Archived posting to the Leica Users Group, 1998/04/08

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Subject: Re: [Leica] Matching Film to Lens Contrast / Dan
From: Dan Cardish <dcardish@microtec.net>
Date: Wed, 08 Apr 1998 08:34:11 -0400

At 05:46 PM 07-04-98 EDT, you wrote:
>In a message dated 98-04-07 17:19:41 EDT, you write:
><< 
> I don't fully understand what is meant by lens contrast.  I always thought
> that low contrast in a lens was caused by non image forming flare from
> poorly coated lens surfaces or poor baffling of the interior of the lens. 
>  Dan C. >>
>===================================================
>  Dan etal -  Go to Erwins fine Web-Site "Eyes of the Master"
>                                    It tells all.
>
> http://www.imx.nl/photosite/leica/m/lenses/pages/choices.html
>
>  Marvin
>
It's a great web site, this is true, but it doesn't appear to explain the
questions I have.  That is, what are the sources of the high and low
contrast in a lens, in terms of optical aberations?  Is there someting more
going on then simple flare in the lens?

Dan C.