Canon Speedlite 380EX Instruction Manual - Page 9

8. AF-Assist Beam If where you focus lacks sufficient light or contrast, the Speedlite's AFassist beam is emitted automatically to help the camera autofocus. The AF-assist beam is effective from 0.7 to 10 meters (2.3 to 33 feet). AF-assist beam activation Depending on the camera and the active focusing point, either the camera's AF-assist beam or the Speedlite's AF-assist beam is emitted. Speedlite 380EX's AF-assist beam is linkable only to the center focusing point. If the camera has only one focusing point (AF frame), the Speedlite's AF-assist beam is emitted. If the camera has multiple focusing points, the camera's AF-assist beam is emitted instead. With the EOS 50,EOS 50E,EOS ELAN If ,EOS ELAN It E and EOS-1N, Speedlite 380EX's AF-assist beam is emitted if the center focusing point is active. See page 46. 9. Shutter Button Operation The EOS camera's shutter button operates in two steps: Press it halfway or all the way. When it is pressed halfway: 1) Autofocus is activated to focus the subject. 2) The exposure setting (shutter speed and aperture) is also set at the same time. When it is pressed completely: 1) The shutter is released to take the picture and then the film advances to the next frame. II II. Speedlite 380EX with Type-A Cameras With a Type-A camera, you can use Speedlite 380EX's E-TTL auto flash system. The E-TTL auto flash system uses the camera's focusing pointlinked, evaluative metering sensor to meter the flash exposure. Flash exposure control is more precise, resulting in a balanced exposure for both the subject and background in fill-flash or low-light conditions. Automatic exposure control and flash exposure control are therefore combined. FP flash and FE lock can also be easily set. 1. F ully-A.Aomatic riasn operation For fully-automatic flash operation, attach Speedlite 380EX to a Type-A camera and set the camera to Program AE ( P) or Full Auto (0). The ETTL auto flash system then sets the camera's sync speed and aperture automatically. This mode makes flash photography easy and automatic for low-light and fill-flash conditions. (1) Fully-Automatic Flash Operation O O hre cOarrflo. I Set the camera to Program AE ( p ) or Full Auto (0). • If a Programmed Image Control mode is set, the Full Auto mode takes effect. Turn on the Speedlite's power switch. 16 17