On 3 Jan 2005 at 23:38, John Whittingham wrote:

> > Just because CA isn't evident at the plane of focus doesn't mean 
> > it's not a form of CA, it's certainly not a bloom artifact in the 
> > image under scrutiny.
> 
> Where would you suggest the obvious place to look for evidence of CA is then?

In the image. The CA that is being exhibited in this image is not the typical 
linear lateral CA (or transverse chromatic aberration (TCA)), that is generally 
discussed and it's not a global distortion across the image, it seems relative 
to the distance from the focal plane like a severe Longitudinal Chromatic 
Aberration (LCA).


Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
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Pentax user since 1986, PDMLer since 1998

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