... buzzer will not prompt 7. Photosensitive flash sync and red-eye reduction function: 1> Photosensitive sensor flash sync and red-eye reduction features ... in a certain period of time, the first flash of light 1/10 , the second flash panel displays the same size, the other ... X-sync cord jack, pressthe shutter button cited flash flash, Note: flash CELL + FM, CELL +1, or CELL +2 state must be set 2013 ...