I have the same problem (camera device in /dev/bus/usb/... accessible only by root), but with libgphoto2 2.1.99-8 from experimental and udev 0.088-2.
The reason seems to be the second rule (BUS!="usb", ...) in the generated udev rule file (/etc/udev/libgphoto2.rules). According to udevinfo, udev doesn't report any BUS setting for the device, so the other rules are skipped. If I remove the above rule, the usb device gets created with rw permission for group "camera" as intended. Cheers, Roderich
