Archived posting to the Leica Users Group, 2007/10/25

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Subject: [Leica] Zeiss ZM Sonnar 50mm 1.5 ?
From: kididdoc at cox.net (Steve Barbour)
Date: Thu Oct 25 13:04:33 2007
References: <380-2200710425195738103@M2W032.mail2web.com>

On Oct 25, 2007, at 12:57 PM, telyt@earthlink.net wrote:

> mehrdad <msadat@gmail.com> wrote:
>
>> it is supposed to have a look of the old sonnars when wide open and i
>> could not put my hand on it. when i take a shot, i know what i have
>> taken but with this lens wide open i could not. i really tried  
>> hard to
>> see if i can get a handle on it but...
>
> As I understand it the 'old sonnar' look is from spherical  
> aberation which
> among other things causes focus shift as it's stopped down.  The RF  
> cam is
> adjusted for moderate apertures so it's tricky to focus accurately  
> at close
> range & wide aperture.




thanks Doug..


Steve


>
> Doug Herr
> Birdman of Sacramento
> http://www.wildlightphoto.com
>
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In reply to: Message from telyt at earthlink.net (telyt@earthlink.net) ([Leica] Zeiss ZM Sonnar 50mm 1.5 ?)