Download this app if:
Remote Release allows you to "remote release" your Canon EOS DSLR from your Android device with only a USB cable.
*** PLEASE READ THE ENTIRE DESCRIPTION ***
*** IF YOUR DEVICE IS NOT COMPATIBLE THIS IS NOT MY OR THE SOFTWARES FAULT - YOUR PHONE IS MISSING NEEDED SOFTWARE OR HARDWARE !...
Snap snap — Pretty cool, if you have the right kind of camera... This is a free version of the remote DSLR camera controller app released a few months back.