TAM 兄 , THANKS FOR YOU VOTE , IT'S REALLY +2EV , IN BACK LIGHTING , IF YOU DON'T OVER EXPORE FOR 1 TO 2 EV ,
YOU WOULD'T GET THE DETAIL IN NEGETIVE FLIM ,BECAREFUL , DON'T DO IT IN DIGITAL . UNLESS YOU USE RAW FORMAT , TO OVER EXPORE IN THE TIME YOU EXPAND YOU IMAGE .