Archived posting to the Leica Users Group, 2007/01/15

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Subject: [Leica] 28mm Summicron vignetting
From: mark at rabinergroup.com (Mark Rabiner)
Date: Mon Jan 15 17:56:39 2007

On 1/15/07 7:35 PM, "Leonard Taupier" <len-1@comcast.net> typed:

> Here are a few examples of vignetting using the 28mm Summicron. These
> were shot in b&w but the sky was crystal clear blue. These were shot
> by my son at Zion, Bryce and the Grand canyon.
> 
> <http://gallery.leica-users.org/v/LeonardT/28mm/Img138.jpg.html>
> 
> <http://gallery.leica-users.org/v/LeonardT/28mm/Img145.jpg.html>
> 
> <http://gallery.leica-users.org/v/LeonardT/28mm/Img225.jpg.html>
> 
> <http://gallery.leica-users.org/v/LeonardT/28mm/Img136.jpg.html>
> 
> I'm not sure of the f stop but I believe they were in the f5.6 to f8
> range. We ran a test in my backyard of the Summicron versus the
> Elmarit (not asph). The Elmarit had a little less vignetting. All the
> examples were easily fixed in Photoshop using the lens distortion
> filter.
> 
> Len
> 
> 
> 
I don't think you're going to get vignetting at f5.6 to f8 with even the
cheapest dumbest glass.
I think this is sky polarization or digital stuff emphasized by extreme
addition of contrast.


Mark Rabiner
New York, NY
40?47'59.79"N   
73?57'32.37"W

http://rabinergroup.com/




Replies: Reply from len-1 at comcast.net (Leonard Taupier) ([Leica] 28mm Summicron vignetting)
In reply to: Message from len-1 at comcast.net (Leonard Taupier) ([Leica] 28mm Summicron vignetting)