Canon grip r8 July 8, 2019 16 32 64 128 Canon r8 grip extension Canon r8 grip battery Canon eos r8 grip Canon battery grip eos r8 Grip canon r8 eg e1 Canon r8 grip extender Camera grip canon r8 Vello battery grip canon r8 Batterie grip canon r8 Canon grip Canon r8 rp Canon r8 mark ii Canon r8 video settings