The Olympus MAL-1 is a tiny, camera-mounted LED light designed for macrophotography: you can steer those little lights right to where you want them, and even adjust their brightness individually. Because this light is camera powered, it needs the accessory port present on many Pen and OM-D cameras. Without this port, the MAL-1 does not work, so don't buy it! If you have an Olympus Pen or OM-D digital camera with a little data port under the flash shoe, this accessory should work- but check your camera's manual to be sure.