33• TypeType: On-camera, E-TTL II/E-TTL/TTL autoflash SpeedliteCompatible cameras: Type-A EOS cameras (E-TTL II/E-TTL autoflash),Type-B EOS cameras (TTL autoflash)Guide No.: 43/141 (at 105mm focal length, ISO 100 in meters/feet)Flash coverage: 24 - 105mm (14mm with wide panel)• Auto zoom (flash coverage set automatically for lens focallength and image size)• Manual zoom• Flash head swing (bounce flash)Flash duration: Normal flash: 1.2 ms or shorterColor temperatureinformation transmission: Flash color temperature information transmitted to camera• Exposure ControlExposure Control Type: E-TTL II/E-TTL/TTL autoflash, manual flashFlash range(with EF50mm f/1.4, ISO 100): Normal flash: Approx. 0.7 - 24.3 m / 2.3 - 79.7 ftHigh-speed sync: Approx. 0.7 - 12 m / 2.3 - 39.4 ft (at 1/250sec.)Flash exposurecompensation: Manual, ±3 stops in 1/3- or 1/2-stop incrementsFE lock: With <7> button or <P> buttonHigh-speed sync: ProvidedFlash exposureconfirmation: Flash exposure confirmation lamp lights• Flash Recycling (with size-AA alkaline batteries)Recycling time/Flash-ready indicator: Normal flash: 3.7 sec. / Red pilot lamp lights• Wireless FlashTransmission method: Optical pulseChannels: 4Wireless options: OFF and SlaveTransmission range(Approx.): Reception angle: ±40° horizontal, ±30° verticalSlave-ready indicator: AF-assist beam blinksModeling flash: Fired with camera’s depth-of-field preview button• Custom Functions: 6 (12 settings)Specifications