[Leica] Problem summicron uniformity

[saganicc at MSKCC.ORG (Saganich, Christopher/Medical Physics)]

Possibility, I have to test that.


-----Original Message-----
From:   lug-bounces+saganicc=mskcc.org@leica-users.org on behalf of Rick 
Dykstra
Sent:   Wed 12/8/2004 12:33 AM
To:     Leica Users Group
Cc:     
Subject:        Re: [Leica] Problem summicron uniformity

I've used the same lens at the beach (in the water at times) without a  
filter.   I didn't notice nonuniformity.  Could it be flare off the  
filter?

Rick.


On 08/12/2004, at 4:27 PM, Saganich, Christopher/Medical Physics wrote:

>
> Hello
>
> I took my leica to the beach with my summicron ASPH 35 and Orange/red  
> filter.  The shots all have noticable nonuniformity side to side.   
> Darker on the sides then in the center by about one stop.
>
> Example:
> http://www.apug.org/gallery/showphoto.php? 
> photo=4185&password=&sort=1&cat=500&page=1
>
> I went back over other rolls and noticed the same thing even with my  
> M2, but didn't notice this with other lenses.  I made a few test shots  
> with my Voghtlander 35/2.8 with same filter and then made an identical  
> shot with the ASPH Summicron 35, then without the filter.  Similar  
> patterns were observed for both lenses but less so without the filter.
>
> The question is whar should I expect from these lenses in terms of  
> exposure uiformity?  Is there a mechanical Issue with the shutter?  Do  
> filters cause these issues?
>
> Thanks,
>
> chris
>
>
>       
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