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Digital BW, The Print

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RE: [Digital BW] off topic Re: lossless archiving

2001-08-26 by Tim Spragens

I've been scanning images with Vuescan as compressed TIFF, 48-
bit RGB. If I open these in Pshop and do anything, then resave, 
they grow. This made me stop to take a look. If I save either as 
compressed or non- with TIFF in Pshop, they're bigger, and the 
compressed can be larger than non-compressed. I don't think 
Adobe must be using the full compression possibilites of the 
format. 

Very likely it is image dependent, and with high-detailed photos it 
is worse than those with smooth areas. 

I'd be happy to be proved wrong here, or shown a switch I haven't 
flipped.

Tim Spragens

> Really? of about 20,000 images saved as tiff so far, I can't say I've
> ever noticed this.
> 
> I'll look when I do the next 30,000 soon, but my experience so far is
> compressed tiff work fine and actually does compress - so far.
> 


--
Tim Spragens
http://www.borderless-photos.com

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