The 'camera base' as you put it is the list of camera's known
by gphoto2. But even if it's not listed that does not mean it
can't be used. Eg. my camera (a D5000) is not known either,
but it is listed as 'USB PTP Class Camera' by gtkam.
Strangely enough digiKam which also uses gphoto2 underneath
can only list one thumbnail while gtkam shows them all.
Maybe you should try directly with gphoto2. Have a look at
this page :