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Hi, We did a bit of offlist emailing and have now fixed this issue. Because I got confused as well, here is a quick recap with the correct diagnostics, for future reference: The context example actually did work as promised: it included the image in 16-bit color in a PDF 1.5 document. The context document appeared not to work, because Alan's previewer (xpdf) does not deal with 16-bit images correctly. The file displayed fine with acroread or ghostscript. The latex document appeared to work, but only because it included a downgraded 8-bit color version of the image. To get the latex-effect in context, there are two possibilities: either \pdfminorversion=4 (or lower) or \pdfimagehicolor=0. To get the context-effect in latex, I have no idea. ? Best wishes, Taco