If you place a PSD file with a transparent background into Adobe InDesign and export it as a high-res PDF, you may notice that the edges of your placed image look horrible. There’s usually a black & white halo around the edges of the transparent PSD (see the image above for example). You won’t see them on a placed TIF file, and they generally don’t print anyway, but they’re annoying nonetheless. Fortunately, Bob Levine at InDesignSecrets has finally spilled the beans on what the problem is, and how to fix it. In most all cases, it’s as simple as turning off the Smooth Images feature in Acrobat. Read Screen Artifacts on Transparent PSDs in Exported PDFs Can Be Deceiving…Most of the Time for more information.