Thanks ease for your reply.
Well, that's what I very often read about the 5D3. Also there not so much good news about the combination of raw and Android with the cheaper cams like 50D, 600D, etc.
But, what about the 5D2?
I would buy myself a Nexus 7 - in case it will work (especially for focus pulling).
Anyone with a 5D2 has tried it out?