[Digikam-users] jpeg compression

[Bjørn Kvisli]

Torsdag 28 juni 2007 20:24, skrev Arnd Baecker:
> On Thu, 28 Jun 2007, [utf-8] Bjørn Kvisli wrote:
>
> [...]
>
> > Well, I really hope this is the case. Loosing detail with each save would
> > really be bad.
>
> Have a look at
> http://www.cywarp.com/faq_jpg_degradation.htm
> (Of course best is to try it out ... ;-)
>
I tried to save a picture quite a few times, but could not see the effect of 
degradation as descibed in the linked article. I guess I have to find out 
more about this. 
Digikam also has a setting for png compression. Mine is set to 9 (maximum). Is 
png still lossless?

> So if this is important for you, then
> a) use png to save edited pictures
> b) if you really aim at best quality, then start with raw images
> However, then you should not worry too much about
> file sizes, they are just as big as they are .... ;-)
>
> Best, Arnd
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