rpm -qR sane-backends | grep gphoto2 libgphoto2.so.2()(64bit) libgphoto2_port.so.0()(64bit) I don't see why sane-backends should depend on gphoto2. See bug 220958 for other packages that depend on gphoto2 but probably shouldn't.
sane-backends has a gphoto2 backend to access digital cameras.