Re: filmscanners: File format

[TonySleep@halftone.co.uk (Tony Sleep)]

On Mon, 2 Apr 2001 14:44:57 +0300 (EET DST)  =?ISO-8859-1?Q?Hugo_G=E4vert?= 
(hugo@cc.hut.fi) wrote:

> > Tony Sleep wrote:
> > >If you merely open and save a JPEG at the same compression,
> > >without editing, you lose nothing
> > With my small and simple test I found other results :-)
> 
> Come on guys, what happens when you save with jpeg or any other
> compression that loses data?

I was relying on received wisdom from reference books, always a dodgy 
proposition :(

Having just tried it:

open
pic.jpg    1,913k
save with same compression
copy1.jpg  1,853

open
copy1.jpg  1,853k
save with same compression
copy2.jpg  1,619k

...ad nauseam. Plainly stuff is getting discarded.

Regards 

Tony Sleep
http://www.halftone.co.uk - Online portfolio & exhibit; + film scanner info & 
comparisons