Introduction: Support the E-TTL newer Canon camera can be accessed through the camera menu.In the flash control menu “externd flash function settings you can set the flash parameters”;such as switching E-TTL mode/manual flash mode and multiple flash modes(Multi),exposure bracketing ,exposure compensation. COMPATIBLE with all Canon DSLR Cameras Such as 5D Mark II/7D/60D/600D/550D/500D/1000D/1100D/5D/50D/40D/450D/600D/650D/ 5D Mark III etc. Note:Canon built_in menu can only adjust A’s parameters,you can not adjust the parameters B,it can only be adjusted by selecting the button.Specifications: Guide No:GN14(ISO 100) Color Temperature:5500K Flash Time:1/200s-1/20000s Flash Times:100-1500 flashes Transmission Range:20cm-5m Flash Ready indication:Approx 2.9s Extra function:Power Saving,Overheart Protection Exposure Control Type:TTL,Manual flash,Multi-flash Circuit design:Insulated Gate Bipolar Transistor(IGBT) External Interface:Hot Shoe,PC Port ,External Charging Port Power Supply:4 pcs AA Alkaline batteries or AA NI-MH batteries Firing configuration:Two flash tubes can be fired together or singly Flash Ratio Control:1 : 8 - 1 : 1 or 1 : 1 - 8 : 1 in 1/2 - stop increments Flash Coverage:Approx 80 degree up and down bottom and 80 degree left and right Control Unit:143 x 73 x 61 mm Flash Unit:130 x 126 x 28 mm Package List: 1 x Mcoplus Macro Flahs Light 1 x 49mm Metal Adapter Ring 1 x 52mm Metal Adapter Ring 1 x 55mm Metal Adapter Ring 1 x 58mm Metal Adapter Ring 1 x 67mm Metal Adapter Ring 1 x 72mm Metal Adapter Ring 1 x 77mm Metal Adapter Ring 1 x Mini Stand 1 x Protect Bag 1 x User Manual