But then again it does work through USB at least to a certain extend, I am getting a Nexus 7 and am very curious about the functionality of the DSLR controller app...
I had a play with it using last years Nexus 7 on my 5dmk3 and it worked surprisingly well!
It works really well for finding focus as the picture looks better than what i get on my 5 inch Ikan field monitor. even though it only has the resolution of the lcd liveview which i believe is 800x480, it looks much sharper than the 1080i that i get though the hdmi on the ikan. maybe this will change if we ever get a magic lantern port to firmware 1.2 on the 5dmk3 with clean 1080p
The remote operation through the touch screen is a nice bonus but you won't get the magic lantern menus, you'll still have to do this on the camera lcd.
I like that it allows you to use the tablet as an external field monitor while leaving the camera lcd fully operational for monitoring so that you can have two points of monitoring.
It also means you don't have to wait for the horribly slow switching between liveview and hdmi output whenever you want to use the camera or magic lantern menus!
The only real downsides i can see in my testing,
The image lags slightly.. Hopefully this improves with the newever nexus tablet and is not hitting the limit of usb2. It's totally useable as is though.
It drastically reduces the record speed of the camera in raw recording mode. resolutions i was able to record continuoisly in previously were limited to 200-300 frames.. Not sure if there is anything that can be done about this on the magic lantern end?..
I asked the developer of DSLR controller if he would be able to do anything to reduce the overhead, He said that it would have to happen on the ML side as he is only using the standard canon remote interface.
The battery will probably only last 3-5 hours. But i imagine you could hook this up to a battery system with the right adapter cable.
I found the start/stop record button to be a bit flakey so i just ended up using the hardware button on the camera.
Other than that the only issue i can see with it is figuring out how to mount a nexus nicely to the camera. I've seen one solution using a car dashboard mount but it looked a bit goofy..
With a bit more work this thing could be really awesome as a low cost alternative to expensive field monitors. withe the added ability to remote control on cranes etc!
It even has a selection of anamorphic de-squeeze options!