The default rules of udev 090 do not allow ptp cameras to be accessed by gphoto2 as a user. Using the suggestion at http://forums.gentoo.org/viewtopic-t-357214-postdays-0-postorder-asc-highlight-camera-start-25.html allows my camera to be accessed by gphoto2 as a user. Portage 2.1 (default-linux/x86/2006.0, gcc-4.1.1, glibc-2.4-r3, 2.6.16-gentoo-r8 i686) ================================================================= System uname: 2.6.16-gentoo-r8 i686 AMD Athlon(tm) 64 Processor 3500+ Gentoo Base System version 1.12.1 dev-lang/python: 2.4.3-r1 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.16.1-r2 sys-devel/gcc-config: 1.3.13-r2 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r5 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=athlon64 -mtune=athlon64 -m32 -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-O2 -march=athlon64 -mtune=athlon64 -m32 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage" USE="x86 152 3dnow X acpi alsa arts browserplugin cairo crypt cups dbus dvd esd flac gif glitz gnutls gphoto2 hal ieee1394 jpeg kde kdeenablefinal lm_sensors mmx mp3 nptl nptlonly nsplugin ogg oggvorbis opengl pdf png qt rdesktop samba spell sse ssl startup-notification tiff truetype usb userlocales vorbis wifi win32codecs xine xscreensaver zlib elibc_glibc input_devices_mouse input_devices_keyboard kernel_linux userland_GNU video_cards_nv video_cards_nvidia" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS, PORTAGE_RSYNC_EXTRA_OPTS
No, you need to create a custom rule for your camera, we can't change _all_ usb device nodes to be writable by anyone, that's not a good security policy :)
