Fujifilm EF-20 TTL flashgun. This flash combines a compact design with efficient controls. The EF-20 has a guide number of 20 (ISO 100-m) and operates full TTL with the compatible cameras, the EF-20 provides superb lighting for each shot. The in-built wide panel diffuser provides effective flash distribution while EV adjustment can be made up +/-1.0EV in 5 steps (-1, -0.5, 0, +0.5, +1). The hotshoe folds cleverly into the flash body to minimise space and simply rotates out when required for use. The EF-20 is powered by 2 AA batteries, the quick charge time of approx. 4 seconds keeps the EF-20 ready for use. The EF-20 is comptible with X-Pro1, X-T1, X-E2, X-E1, X-M1, X-A2, X-A1, X100T, X100S, X100, X30, X20, X10, X-S1, FinePix HS50EXR, HS30EXR, HS33EXR, HS25EXR, HS28EXR, HS20EXR, HS22EXR, S1, SL300, SL305, SL280, SL260 and SL240.