Type Clip-on, E-Type Clip-on, E-TTL II/E-TTL/TTL autoflash Speedlite with wireless control AF-assist Beam Yes, linked to multi-point AF system of compatible cameras Compatible Cameras All Canon EOS cameras (flash metering system may differ depending on the model) Guide No. (ISO 100, in metres) Zoom/Guide 14/15; 24/28; 28/30; 35/36; 50/42; 70/50; 80/53; 105/58 Flash Count 100-700 flashes (internal power)1500 flashes (wireless transmissions) Flash Covering Setting Method Fixed condenser lens with internal zoom (moving unit in flash head) Flash Coverage Setting System 1 Autozoom (zooms automatically to match the lens focal length) 2 Manual Zoom (with zoom button) 3 Wide Panel (when used zoom automatically set to 28mm setting) Zoom Position Indicator Indicated by numerals on the LCD’s focal length display Bounce Direction Up: 0-90 degrees; Down: 0-7 degrees; Left: 0-180 degrees; Right: 0-180 degrees Bounce Lock 0 degrees up, down, left, right; 90 degrees up Bounce Position Indication LCD indicates 7 degree bounce down only Exposure Control Modes E-TTL II/E-TTL autoflash (Type-A cameras)TTL autoflash (Type-B cameras) Flash Modes Normal Flash, Flash Modes Quick Flash, Flash Modes High sync speed, Stroboscopic Flash, Test firing, Modelling flash Flash Range (at ISO 100 with 50mm f/1.4) Normal flash: approx. 0.5mm – 30m Quick flash: approx. 0.5mm-7.5m (min.) and 0.5mm– 21m (max.) High-speed sync: 0.5mm – 15m (at 1/250 sec.) Shutter Curtain Synchronisation First or second curtain synchronisation Custom Functions 14 (32 settings) user selectable Power Switch ON/OFF button. SE mode provided Power Sources Four AA alkaline/Ni-Cd/Ni-MH batteries Min. Recycling Time Approx. 3.7 sec. Dedicated bracket Included PC Terminal Connection Included External Metering (Auto, Manual) Included Dimensions (WxHxD)mm 76 x 137 x 117 Weight (excluding batteries) 405g