I am having a lot of trouble with gthumb and the .nef raw image files from my wife's Nikon DSLR. In spite of making sure that seemingly-appropriate mime entries for .nef are in the system (thunar recognizes .nef as "Nikon raw image", and thumbnails it), gthumb --import-photos reports "no images found," gphoto2 refers to the .NEF files as "application/x-unknown", and gthumb will only display the low-res embedded thumbnails of the .nef files.
In contrast, on my wife's Ubuntu machine, gthumb will import and display the .nef files just fine. What am I doing wrong here? -Andy

