Bug#402389: Doesn't look like a bug in usbmount
Your bug doesn't look like a bug, at least no bug in usbmount.
I guess it is a hardware or maybe driver problem.
Did you try to mount your camera manually? Did this work? Can you mount
other hardware, e.g. an usb stick?
Your log snippet shows output which is generated _before_ usbmount is
activated, otherwise you would find output from usbmount in the logs.
Something like this:
Feb 14 18:12:59 bluemoon usbmount: executing command: mount...
To be completely sure you can set VERBOSE="no" in
Please reply as soon as possible, because your bugreport is blocking
usbmount from entering Etch!