[Scribus] image resolution problem

[Christoph Schäfer]

Am Sonntag, 16. April 2006 01:44 schrieb Joel Mawhorter:
> > > > > > > >
> > > > > > > > Am I missing something basic or is this a bug in Scribus?
> > > > > > > >
> > > > > > > > Joel
> > > > > > >
> > > > > > > Hi Joel,
> > > > > > >
> > > > > > > did you check the export settings for PDF and Bitmap files? Do
> > > > > > > you get a 72 dpi image if you set export resolution to 300 dpi?
> > > > > > >
> > > > > > > Christoph
> > > > > >
> > > > > > Hi Christoph,
> > > > > >
> > > > > > Yes I set both to 300 DPI.
> > > > > >
> > > > > > Joel
> > > > >
> > > > > Hi Joel,
> > > > >
> > > > > I can't confirm this here. I tested with 1.2.5cvs, 1.3.3.1, and
> > > > > 1.3.4cvs. Input: 300 dpi, output: 300 dpi.
> > > > >
> > > > > Would you consider an upgrade to 1.2.5cvs or 1.3.3.1?
> > > >
> > > > Christoph, can you also test with 1.2.4.1?
> > > >
> > > > Craig
> > >
> > > Ooops, I forgot I still had an 1.2.4.1 installation here. Exactly the
> > > same as in 1.2.5cvs. No issues with image and PDF export.
> >
> > As I expected, thanks for testing.
> >
> > Craig
>
> Thanks for the work on this.
>
> I have a bit more info. I either changed something related to PDF output or
> I was having a brain dead moment when previously testing this. The problem
> I'm now seeing is that PDF output is correct (respecting the resolution of
> my imported image). However, bitmap output (either JPEG or PNG) is
> downsampled to 72dpi regardless of what resolution I output at. The
> resulting bitmap is the right size in terms of number of pixels (e.g. an A4
> size page outputs to ~2500x3500 pixels at 300 DPI) but all of the elements
> (bitmaps or text) are output as though they were 72dpi resulting in severe
> pixelation when viewing the image at 100% zoom.

Yes, confirmed with all Scribus versions I mentioned. The numbers are correct, 
but watching the picture at 100 % zoom in GIMP, Cinepaint, XNview, and Corel 
PhotoPaint shows it's at low resolution and pixelised.

>
> Sorry for the previous misinformation. FYI, I'm using qt-3.3.4 and
> libart_lgpl-2.3.17 (if that makes a difference).
>
> Joel

Christoph