I'm no expert but I just mount it.
First plug the camera in and see if it was recognised;
as root
dmesg
then you can mount it just like any drive
I make a directory for it
mkdir /mnt/usb
It should have showed up as sda1
mount /dev/sda1 /mnt/usb
then you can just use nautilus and open /mnt/usb
This may explain it better
http://home.gagme.com/greg/linux/usbcamera.php