Sorry, I've clarified my post above. There is zoom, but this zooms in on a section of the page using a selection rectangle. You can pan around using the joystick, but it's not something that's conducive to linear reading. We'll show it in our video.
I don't have great eyes and I haven't needed to change the font size or zoom to read text in PDFs. For complex diagrams, zoom is helpful.
-------------------- Lisa Gade Editor in Chief, MobileTechReview