The 50 AF-1 digital has all the right technological features, including numerous application possibilities and even higher performance levels (guide number 50). Equipped with a USB interface for online firmware updates, its innovative and future-proof credentials are proven. Fully automatic flash modes permit precise light output tailored to each individual subject. Numerous manual fine tuning options extend your creative photographic freedom. Virtually limitless possibilities are opened up for creative lighting thanks to a fully swiveling reflector system which also contains a flip-out reflector card and a diffuser. The slave function allows the 50 AF-1 digital to be used "without constraints”. In the wireless TTL mode it can even be used as a slave device. With built-in camera flash, A superb flash unit for committed amateur photographers. Technical specifications: GN of 50 for ISO 100/21degree and 105 mm; vertical (-7/+90degree) and horizontal (300degree) swivel reflector; illuminated LCD display; motor zoom for 24 - 105 mm illumination; integrated wide-angle diffuser for 12 mm illumination; extendible reflector card for soft flash illumination; modeling light (permanent light for checking the photo); integrated autofocus measuring flash; flash readiness indicator and correct exposure display on unit and camera (subject to camera); flash range indicator in the LCD display; automatic unit switch-off and manual key lock; TTL flash mode; manual flash mode with 8 partial lighting levels; HSS - high speed synchronization; 1st and 2nd shutter curtain synchronization; manual flash exposure correction for TTL flash mode; automatic fill-in flash; flash bracketing; Four Thirds TTL flash mode; Four Thirds TTL remote mode (Slave and servo mode); 4 x AA alkaline-magnesium or lithium batteries; 4 x AA NC or NiMH rechargeable batteries. This unit is designed for Olympus, Panasonic and Leica camera systems.