Have you installed libgphoto2? Also can you use it as root?
I followed this howto for getting my G5 to work: http://gphoto.sourceforge.net/doc/ma...sions-usb.html
Where it asked to choose a script to /etc/hotplug/usb/usbcam I used: /usr/share/doc/libgphoto2-2/linux-hotplug/usbcam.group
Instead of creating a group camera i modified the script like so:
#GROUP=camera
GROUP=usb