I'm with Godders on this one...  Maybe something to do with the type of 
window.  For example, argon gas between the panes or a UV (or some other 
  insulating filter) on the glass could cause weird colors that may 
otherwise not be noticed by your eyes.  Better to test outdoors in 
"real" natural light.

-- 

Christian
http://photography.skofteland.net

Godfrey DiGiorgi wrote:
> Hmm. I would be inclined to think that there's some odd refraction  
> happening through the window which is not visible to the eye. I  
> understand the captures are well-underexposed, that would exacerbate  
> the appearance of the rainbow.
> 
> Test with other lighting ... particularly one in which there is no  
> glass in the light path.
> 
> G
> 
> On Jan 30, 2007, at 6:53 PM, David Weiss wrote:
> 
>> Godfrey,
>>
>> As to your questions below:
>>
>> Light source was sunlight through the window.  With the amount of snow
>> on the ground, a lot of that light was reflected sunlight.  I adjusted
>> the white balance manually and it seemed fine.
>>
>> I am going to check it again with other light sources and some other
>> subjects and without underexposure.
>>
>> No filters used or hood, but light was at my back so no light entering
>> lens at oblique angles.
>>
>> Thanks for the reply.
>>
>> I sent a note to pentax USA, referring them to my images.  Hope they
>> take a look.
>>
>>
>> Dave
>>
>>
> 
> 


-- 
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net

Reply via email to