Live view via USB?

[dubzeebass]

Hi there

I wonder if this is possible... With the Canon app we can view the camera's output as we all know.

Is it possible to use the USB as video out?

[Danne]

It works with dslr controller. A little laggy but works, even wit raw. Prepare for error codes though.
Maybe not what you, re after?

[SDX]

Yes, one can access the liveview using the ptp protocol. Libraries for ptp exist for many uses and platforms, even Arduino.
You might also look into gphoto.