Here’s an interesting comparison of PDF rendering between Apple’s Preview and Adobe’s Acrobat Reader. The text shown has a drop shadow applied to it in InDesign. It looks correct in Acrobat, looks correct when rendered in Photoshop, and looks correct on the iPhone. Preview seems to render a different black point or something, because the drop shadow ends up looking like an outer glow when applied over a dark background.
Oh yes, and that’s the copyright for Surfing The Deathline book 4. More about that to come. :)