The Lumix DMW-FL500 is a compact external flash for selected Lumix DMC cameras equipped with a hot shoe. Features include a locking ring to secure the flash in place, plus an LCD display readout of all flash functions. The flash head is adjustable upwards for bounce lighting off the ceiling, as well as 180 degrees for bouncing light off reflectors or a wall. The AF assist lamp insures the right amount of light is present when used with Four Thirds compatible cameras. The Lumix DMW-FL500 features a variety of settings for both automatic and manual settings. TTL sends out a pre-flash to measure the environment, insuring the proper exposure. Auto utilizes a built-in sensor in conjunction with a specified aperture setting through an ISO range of 25-3200. Manual settings allow the user to specify the preferred guide number, which determines the final flash output. High speed flash is also possible through the FP TTL and FP Auto functions. The built-in Wide panel can be used for wide angle lenses, with additional preset zoom settings of 12, 14, 17, 25, 35 and 42mm focal lengths. The Lumix DMW-FL500 is powered by 4- AA batteries (alkaline or NiMH, each sold separately) and is compatible with L10, L1, FZ50, LC1, FZ30, FZ20, FZ10 and LC5 Lumix Digital Camera models.