[Scribus] transparency question
Mon May 14 20:14:54 CEST 2007
> This regards using png images with portions that are
> 100% transparent. What seems to happen is that this
> kind of transparency is respected even when exporting
> to PDF 1.3 (as seen in acroread and kpdf), which is not
> what I was expecting.
You are right PDF1.3 does not support transparency
and as far as I know scribus is not able to reduce/rasterize
transparency to pdf.
> So I'm wondering if this is
> too good to be true, that I may be able to use this
> kind of transparency without restriction on what PDF
> version to use, maybe even PDF/X-3...
Sorry, no. X3 is 1.3 based and therefore does not support transparency.
> The question is,
> can I rely on this behaviour?
If it is so - ? - it would be kind of a violation of pdf standard
If a pdf is tagged to be ² 1.3 or ² X3 AND includes transparencies
RIPs will reject
the pdf or will give you false results.
> What I guess was expecting was that since "PDF 1.3 does
> not allow transparency" the transparent part of the png
> would be made white, or maybe black.
"Normally" the whole or partial element(s) will be block out at least
when printing seperated.
Any reason not to use 1.4?
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