Neewer Meike MK580 E-TLL/E-TTL II LCD Display Speedlite Master/Slave Flash for Canon Digital SLR Camera Neewer&reg; Meike MK580 E-TLL/E-TTL II LCD Display Speedlite Master/Slave Flash for Canon Digital SLR Cameras, such as EOS 5D Mark III , 5D Mark II, 1Ds Mark 6D, 5D, 7D, 60D, 50D, 40D, 30D, 300D, 100D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 700D, 1000D, 1100D/EOS Digital Rebel, SL1, XT, Xti, Xsi, T1i, T2i, T3i, T4i, T5i, XS, T3;On-camera, E-TTL II/E-TTL/TTL auto flash speedlite. ^Powerful Flash with High Guide No.58 meters (ISO 100, 105mm). ^Flash Mode: TTL/M/MULTI/MASTER/SLAVE/S1/S2. ^Support Front-curtain,Rear-curtain sync, FEB, FE Lock, AF assist beam, setting custom function, power saving mode, over heat protection, flash exposure compensation and memory function. ^Wireless multiple flash control, Comprehensive and professional flash, support setting various flash functions through DSLR, New additions of power socket and PC port.