On 29 Oct 2004 at 9:46, Steve Jolly wrote:

> I would just mention 
> that JPEG compression also introduces artefacts that look very similar 
> to the ones you mention here - did you check the web versions to make 
> sure that nothing extra was introduced?

Hi Steve,

A very fair question, I did try to ensure that the JPG conversion didn't swamp 
the problem with it's own artifacts, unfortunately it's just as apparent in the 
original conversion. I'm not sure if it's a case of spill or some other sensor 
problem given the intensity of the original colour or if it's a function of the 
post processing. In any case to better illustrate the effect I've made a small 
1:1 crop of the original 4096x2734 PX 16bit ProPhoto RGB file saved as LZW 
TIFF:

http://members.ozemail.com.au/~audiob/temp/IMGP6024.tif  (1.65MB)

Any ideas?

Cheers,


Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
UTC(GMT)  +10 Hours
[EMAIL PROTECTED]
http://members.ozemail.com.au/~distudio/publications/
Pentax user since 1986, PDMLer since 1998

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