My camera is not in the list of supported cameras in digiKam.

Can you add drivers for my camera ?
Only if you pay me. ;)

Seriously, digiKam doesn’t included any camera drivers with it. It makes use of gphoto2 to do camera operations. If your camera is not in the supported list, i would recommend doing some searching around. Many of the new cameras actually provide a USB MassStorage Device Interface, so that you can access the camera like a hard disk. (See, the FAQ about using a USB MassStorage Camera with digiKam).

If you have still have no luck, i would recommend contacting the gphoto2 people.