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If you've mounted them and opened Nautilus you navigate to the mount pont in the file browser and you should see them there. But if you have problems with that the easier way for you might be to download "gtkam" using the Package Manager. That is camera software for retrieving and sorting photos. I think Picasa can retrieve photos also.
Nautilus is the file manager in Gnome. If you open your Home folder sitting on your desktop (assuming you haven't moved it) you're opening Nautilus. It's like Windows Explorer It should have a list of all the mounted devices in the left column.
Another thing I recommended someone else to try is to use F-spot. It's a easy little app to download and organize your photos.
I thought F-spot was installed by default as the photo tool but I guess not.
I never noticed but Mint doesn't seem to have a default app for handling your photos installed, not counting Gimp but, that's not what we meant.
The OP's camera is shown as supported in Gphoto2 if you have that installed you can try... 'gphoto2 --list-cameras | less' That will show you all the cameras supported by gphoto2 and you can see the 935 in there.