I started using my IPT to record video of text from a book (to read later) and I never really learned anything about the options for it. The stock setup let's you tap once to focus on one area. Double tap allows changes the screen, but the resulting video looks the same from what I can tell. Q. What does double tap do? I saw a video on YouTube that show tripple tap to pop up a zoom bar, but that doesn't work on mine. Might be an iOS5 only option. Q. What does tripple tap do? Q. Can you change anything like white balance, contrast, etc... or does that require an app. I've seen apps that claim to work as a magnifying glass, and other effects using filter, but I haven't upgraded from iOS 4, so I don't think filters will work for me.