Archived posting to the Leica Users Group, 2003/10/31

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Subject: RE: [Leica] OT Funny rings on digital image
From: Tim Atherton <tim@KairosPhoto.com>
Date: Fri, 31 Oct 2003 14:11:33 -0700

looks like some kind of newton ring effect...?

could be some form of separation in the UV filter... (which he would do well
without anyway :-)   )



> -----Original Message-----
> From: owner-leica-users@mejac.palo-alto.ca.us
> [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Aram
> Langhans
> Sent: Friday, October 31, 2003 1:38 PM
> To: leica-users@mejac.palo-alto.ca.us
> Subject: [Leica] OT Funny rings on digital image
>
>
> A friend of mine with a Canon D10 took some shots of the northern lights
> yesterday.  He had the camera set to ISO 400 when this was done.  There
> are some funny concentric rings in the image.  He thought they might be
> because of a UV filter, but I told him I didn't thing so. He mentioned
> that he asked on dpreview.com and someone with the same camera had the
> same problem.
>
> Here is the shot in question.  One version is full frame and the other in
> an enlarged center portion.  If anyone has a good explanation for this,
> please comment either on or off list.
>
> http://www.compwrx.com/langhans/full_shot.jpg
> http://www.compwrx.com/langhans/enlarged_shot_with_rings.jpg
>
> Aram
>
> langhans@compwrx.com
>
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