Anyone had this issues with D300 when Geomet'r GPS attach with D300 without "ON" the Geomet'r GPS ,the D300 metering will not swith off in auto(after the lenght of the time u set on manual "auto meter-off delay" 4S.6S,8S,16S---),but when u swith on Geomet'r GPS the metering will swith off by auto.