CAUTION: I am a newbie!
spent some time trying to get pictures out of my camera(Canon A80). It didn't work the normal mount/umount way. I found a way in some other posts that is generic, doesn't involve mount and works fast:
Go to the directory where you wand to save your pictures:
Plug your camera in the usb port and try:
$ gphoto2 --auto-detect
Your camera should appear after the command. If yes proceed to:
$ gphoto2 --list-files
you should see a list of your pictures
$ gphoto2 --get-file 1-10
Adding pictures 1 to 10 to your current directory.
The author of the post wrote:"On kernel 2.6.3 it works perfectly with no configuration at all. "
Sorry for not citing the author - forgot the link.
It worked fine for me! Hope that helps somebody else.