This small flash has big features. The Di 466FT is dedicated to the 4/3 and micro 4/3 systems from Olympus and Panasonic. It is available in classic black or in a new white version to match the Olympus White Pen Camera. The Di466FT provides complete Flash TTL compatibilty with the 4/3 system, but it does much more. With a guide number of 109 this small flash has the power that you will need. The power zoom head tilts up to 90 degrees and also has a wide angle diffuser and bounce card built in. Not only can this flash be used in TTL, it also has a manual mode with 6 power settings and two slave mode functions. Flash exposure comensation can be set directly on the flash up to +/- 1.5 EV in 1/2 EV increments. Other features include auto focus assist beam when photographing in low light, an auto shut off energy saving system and a quick change battery system.