Canon 0585C006 Instruction Manual

22E-TTL II/E-TTL Autoflash by Shooting ModeEOS DIGITAL cameras have three sizes of image sensors, and theeffective focal length of the attached lens varies depending on the model.430EX III-RT/430EX III automatically recognizes the image sensor size ofthe EOS DIGITAL camera and automatically sets the flash coverage thatis ideal for the effective focal length of the lens in the range of 24-105 mm.This function optimizes the white balance during flash shooting bytransmitting the color temperature information to the EOS DIGITALcamera when the flash fires. When you set the camera’s white balanceto <A> or <Q>, the function is enabled automatically.Refer to the specifications in your camera’s instruction manual to findout if it is compatible with this function.When it is difficult to autofocus on the subject in low-light or whencontrast is low during viewfinder shooting, intermittent flashes (a seriesof small flashes) are emitted to help autofocus. The effective range ofthe AF-assist beam is approx. 0.7 - 4 m/2.3 - 13.1 ft. at center andapprox. 0.7 - 3.5 m/2.3 - 11.5 ft. at periphery in the viewfinder.Auto Zoom Adjustment to Image Sensor SizeColor Temperature Information TransmissionAF-Assist Beam The AF-assist beam, which uses a series of small flashes, is emittedwhen 430EX III-RT/430EX III is attached to an EOS DIGITAL camerawith a function for controlling external flashes from the camera’s menuscreen. Note that, depending on the camera model, the camera’sfirmware may need to be updated. When the color filter is attached (p.37), the AF-assist beam, which usesa series of small flashes, is not emitted. If AF-assist beam is required, setP.Fn-05-1 (p.87). During Live View shooting, the AF-assist beam, which uses a series ofsmall flashes, is emitted even when the AF method is set to [Quick AF]. AF-assist beam firing can be disabled (C.Fn-08/p.84). Infrared AF-assist beam can be emitted (P.Fn-05/p.87).