Yongnuo Wireless Master HSS TTL Flash Speedlite YN-568EXII for Canon 1100D 1000D 650D/T4i 600D/T3i 550D/T2i 500D/T1i 450D/Xsi 400D/Xti 350D 7D 60D 50D 40D 30D 20D 5DIII 5DII 5D 1Dx 1Ds series 1D series The YN-568EX II is Yongnuo's first TTL master flash Supports high-speed sync flash with high-speed sync (FP flash), the YN568EX II can synchronize with all shutter speeds. The maximum shutter synchronous speed is up to 1/8000 High guide number, TTL and High speed sync: GN58@ ISO100, 105mm; which reaches the level of the mainstream hot shoe flashes, supports HSS, TTL/M/Multi mode. Multiple trigger mode supported: The YN568EX II can be triggered by the camera set-top, built-in or main-controlled flashing command, S1 and S2 (pre-flash-canceled mode). AUTOMATIC SAVING SETTINGS. YN568EX II can automatically save your current operating settings to convenient your next use. LCD DISPLAY INTERFACE, DECENT APPEARANCE. METAL HOT SHOE STAND, SOLID AND RELIABLE.