E-TTL II / E-TTL Autoflash by Shooting Mode
Simply set the camera's shooting mode to (shutter-priority AE), (aperture-priority AE), (flexible AE) or (manual exposure), and you can use E-TTL II / E-TTL autoflash suitable for each shooting mode.
Select this mode when you want to set the shutter speed manually. The camera will then automatically set the aperture matching the shutter speed to obtain the standard exposure based on the metering of the camera.
Select this mode when you want to set the aperture manually.
The camera will then automatically set the shutter speed, matching the aperture to obtain the standard exposure based on the metering of the camera.
Any shutter speed or aperture value can be set.
Select this mode if you want to set both the shutter speed and aperture value manually.
Standard exposure of the main subject is obtained with the flash light. The exposure of the background is obtained with the shutter speed and aperture value combination you set.
If you use the or shooting mode, the result will be the same as using the (Program AE) mode.
Flash Sync Speed and Aperture Value by Shooting Mode
|Shutter speed||Aperture value|
|Automatic setting (1/X sec. to 1/60 sec.)*1||Automatic setting|
|Manually setting (1/X sec. to 30 sec.)||Automatic setting|
|Automatic setting (1/X sec. to 1/60 sec.)*1||Manual setting|
|Manual setting / automatic setting (1/X sec. -)||Automatic setting / manual setting|
|Manually setting (1/X sec. to 30 sec., Bulb)||Manual setting|
1/X second is the maximum flash synchronization shutter speed of each camera.
1: According to the setting in cameras that support slow shutter synchronization
Auto Zoom Support for Image Senzor Size
EOS DIGITAL cameras have three sizes of image sensors, and the effective shooting angle of view of the attached lens varies depending on the size of the image. The Speedlite automatically recognizes the image sensor size of the EOS DIGITAL camera and automatically sets the flash coverage that is ideal for the effective shooting angle of view of a lens for the focal length range of 24 - 200 mm.
Color Temperature Information Transmission
This function optimizes the white balance during flash photography by transmitting the color temperature information to the EOS DIGITAL camera when the flash fires. When you set the camera's white balance to , the function is enabled automatically. Refer to the specifications in your camera's Instruction Manual to find out if it is compatible with this function.
When it is difficult to autofocus on the subject in low-light or when contrast is low during viewfinder shooting, the infrared AF-assist beam built into the flash automatically flashes to help autofocus.
The AF-assist beam supports 28 mm and longer focal lengths of the lens and its effective range (at 28 mm focal length) is approx. 0.6 - 10 m / 2.0 - 32.8 ft. at the center in the viewfinder and approx. 0.6 - 5 m / 2.0 - 16.4 ft. at the periphery (AF points other than the center AF point).
- If a peripheral AF point or a wide-angle or telephoto lens is used, achieving focus may be difficult with an EOS-dedicated, external Speedlite's AF-assist beam. In such a case, use the center AF point or an AF point close to the center.