Hi Hans and Taco, just a question: do you use PNG transparency purely by the PDF object machinery provided by pdftex, or do you add (via ConTeXt) other dictionaries for transparency definition as well? If the latter, what's normally in there? Regards, Hartmut On Thu, 25 Jan 2007, noreply@sarovar.org wrote:
Bugs item #723, was opened at 2007-01-25 07:27 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=723&group_id=106
Category: Image inclusion Group: v1.40.1 Status: Open Resolution: Accepted Priority: 5 Submitted By: Mark Henning (markhe) Assigned to: Martin Schröder (oneiros) Summary: Pale colors when using transparency in PNG graphics Initial Comment: Hi@all! I hope this is the right place to report this problem: If there is any transparency definition in a PNG file (e.g. transparency by a certain color or given by a mask), then all graphics on the page show pale colors. Graphics on pages before or after this page show normal colors. This is confirmed in several versions of Adobe Acrobat Reader. Ghostview/Ghostscript does not show this behaviour. The reason for this viewer-dependency might be a missing transparency-definition in the PDF file which makes it ambiguous, as reported by Andreas Lobinger in de.comp.text.tex; thread "Blasse Farben bei transparentem PNG in pdftex".