On Sun, Dec 22, 2013 at 2:48 PM, Tobias Ellinghaus <[email protected]> wrote:
> Am Sonntag, 22. Dezember 2013, 14:14:58 schrieb Rodney Heyd:
> > Hi,
>
> Hello,
>
> > I'm noticing that noise is being introduced into some images I've been
> > working on during export from darktable. This is happening on the 1.4
> > release candidate built for Fedora 19 (I also had similar results under v
> > 1.3). The output format doesn't seem to matter either, tiff, jpg, png
> all
> > have the same problem. Any idea what is going on here?
> >
> > Export parameters are min/max = 0, intent = perceptual, profile = sRGB,
> and
> > no additional style applied in export.
> >
> > Here's some sample files:
> >
> > 100% crop from the exported jpg
> > darktable-export-crop.jpg<
> https://docs.google.com/file/d/0Bz22rEgDUSPrQjQxZ
> > ERWcFRINjg/edit?usp=drive_web>
> >
> > Screenshot of roughly the same region from within darktable (also at
> 100%)
> > darktable_screenshot.jpg<
> https://docs.google.com/file/d/0Bz22rEgDUSPrWXM5cE
> > 1FUEZIWEE/edit?usp=drive_web>
> >
> > Original raw file:
> > 20131124_0289.ORF<
> https://docs.google.com/file/d/0Bz22rEgDUSPrdFhRbWhoaWZHd
> > G8/edit?usp=drive_web>
> >
> > Sidecar:
> > 20131124_0289.ORF.xmp<
> https://docs.google.com/file/d/0Bz22rEgDUSPraFRKcm5vL
> > UtVYjQ/edit?usp=drive_web>
> >
> > Thanks! All help would be greatly appreciated.
>
> You are using amaze in that image. What is your setting for "demosaicing
> for
> zoomed out darkroom mode" in the core options of the preferences?
>
> And does it go away if you use PPG instead of amaze?
>
>
>
Ah, that's it! The core option was set to bilinear. If I set it to "full"
then the noise appears, but PPG and bilinear seem ok.
Thanks!
Rod
>
> Tobias
>
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