1/8000s hss capability (up to 1/8000s) on or off camera;
• master & slave flash – as master flash to trigger canon speedlites 600ex-rt, 580ex ii, etc in ttl or m mode – *as slave flash to receive wireless commanders of canon cameras e.g. 7d, 60d, 600d, etc and canon speedlite signals;
• e-ttl ii auto flash – *accurate ttl exposure for canon eos series dslrs;
• full ttl functions – *support fec, feb, fe lock, rear curtain sync, modeling flash, control with camera’s menu screen, etc.;
• powerful li-ion battery – 1.5s recycle time at max. power & 650 full power pops – *forget aa batteriescharging preparation and carrying burden;
• 58 guide number – *gn58 (m iso 100 @ 105mm) with ttl/m/multi/s1/s2 modes
• auto/manual zoom (24-105mm) with correct auto focus assist
• allow for usb firmware update and custom function settings