I have recently purchased a Nook HD+ tablet with Android capability. It can be upgraded to Android 4.1 with just a software download fix.
I want to get an app that will allow me to control my Canon 7D with the Nook Tablet. However, when I did a Google search, I found that there were numerous Android apps for camera control...
http://geeknizer.com/control-canon-n...-with-android/
I wonder which, if any of these apps would be the best for me? I want to use the control when shooting macros and for long exposures. Of course, I would probably find a lot more uses for the app once I get it up and running...

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. So I can't really give you a worthwhile review of "user experience". It was about the only one around at the time and has got some good reviews. From your link, it is apparent that a few others have sprung up since then. It doesn't cost much (about $8) so you wouldn't have much to lose if you wanted to try it out. It only works on the later Canons including the 7D. It doesn't do anything fancy like focus stacking though. I suspect the Helicon solution would cost more but I don't know.