On 1 Apr 2004 at 12:37, Keith Whaley wrote:

> There's no replacing of one low-resolution image with another high res 
> image. It's a filling in of pixel information left out of the initial pass.

It sounds like the embedded jpeg may be a variation on progressive jpeg which 
does in fact display progressively higher density jpg images as the file loads.

http://www.faqs.org/faqs/jpeg-faq/part1/section-11.html


Rob Studdert
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Pentax user since 1986, PDMLer since 1998

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