Yongnuo YN500EX Flash Speedlite is designed for Canon and Nikon Wireless Flash System. Liberate your shutter speed, liberate your creativity. Supports high-speed sync flash YN500EX is the first speedlite supports high-speed flash in china; with high-speed sync (FP flash), the YN500EX can synchronize with all shutter speeds, the maximum shutter sync up to 1/8000. Compatible with N"s and C"s wireless flashing system One YN500EX is able to respectively accept internal flashing of 580EX II, SB-900/800/700, 7D/60D/600D, C order of N"s internal flashing and ST-E2 wireless signal, achieves external TTL and manual flashing. Some beckoning functions such as wireless TTL flashing, grouping light ratio TTL flashing and the illumination of remote controlled flashing can be easily attained only if you carry a camera with built-in flashing command system and YN500EX. A new TTL flash with large guide number GN53@ ISO100, 105mm; which reaches the level of the mainstream hot shoe flashes, supports HSS, TTL/M/Multi mode. Multiple trigger mode supported The YN500EX can be triggered by the camera set-top, built-in or main-controlled flashing command, S1 and S2 (pre-flash-canceled mode). Supports auto/manual zooming The covered focal length will vary among auto, 24approx.105mm on the lamp adapter by operating the zoom button on the flash light, supports full-frame/half-frame camera. C