Incorporated 2.4GHz makes it easy to shoot with advanced wireless multiple flash lighting, in the same way as TTL auto-flash shooting. Multi-angle and multi-directional photography setups are simple, since flash units don’t need visual proximity to one another, and transmission distance extends up to 98.4 ft. TTL, Manual (M), and Multi (Stroboscopic) modes offer the versatility to achieve a correct flash exposure even in complex light-changing environments. The AP-305C Speedlite has a guide number of 36m/118 ft. at ISO 100 to help achieve the lighting you desire. Great for DSLR, Mirrorless, and Off-Camera Photography. Compatible with all Canon cameras, including; Canon EOS Rebel T7, T7i, T6i, T6, T6s, T5i, T5, T4i, T3i, SL3, SL2, SL1, 90D, 80D, 77D, 70D, 700D, 650D, 600D, 550D, 7D Mark II, 6D Mark II, 5DS, 5D, 1D Mark II, M3, M5, M6, M10, M50, M100, M200, R, RP.