Canon 0298B002 Instruction Manual - Page 24

Auto Zoom for Image Sensor Size, About Color Temperature Information Transmission, About the AF-

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Auto Zoom for Image Sensor Size EOS DIGITAL cameras have one of three image sensor sizes. The lens' effective focal length will differ depending on the camera's sensor size. The Speedlite automatically recognizes the EOS DIGITAL camera's sensor size and automatically sets the flash coverage for lens focal lengths from 24mm to 105mm. When the Speedlite is attached to a compatible camera, will appear on the Speedlite's LCD panel. About Color Temperature Information Transmission When the flash fires, the color temperature information is transmitted to the EOS DIGITAL camera. This feature optimizes the flash picture's white balance. When the camera's white balance is set to or , it will work automatically. To see if this feature works with your camera, see the Specifications in your camera's instruction manual. About the AF-Assist Beam Under low-light or low-contrast conditions when autofocus cannot be achieved, the built-in AF-assist beam will be emitted automatically to make it easier to autofocus. The 430EX II's AF-assist beam is compatible with the AF points of almost all EOS cameras. The AFassist beam is compatible with 28mm and longer lenses. The effective range is shown below. Position Center Periphery Effective Range (m / ft) Approx. 0.7 - 10 / 2.3 - 32.8 Approx. 0.7 - 5 / 2.3 - 16.4 23

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23
EOS DIGITAL cameras have one of three image sensor sizes. The lens’
effective focal length will differ depending on the camera’s sensor size.
The Speedlite automatically recognizes the EOS DIGITAL camera’s
sensor size and automatically sets the flash coverage for lens focal
lengths from 24mm to 105mm.
When the Speedlite is attached to a compatible camera, <
s
> will
appear on the Speedlite’s LCD panel.
When the flash fires, the color temperature information is transmitted to
the EOS DIGITAL camera. This feature optimizes the flash picture’s
white balance. When the camera’s white balance is set to <
A
> or
<
Q
>, it will work automatically.
To see if this feature works with your camera, see the Specifications in
your camera’s instruction manual.
Under low-light or low-contrast conditions when autofocus cannot be
achieved, the built-in AF-assist beam will be emitted automatically to
make it easier to autofocus. The 430EX II’s AF-assist beam is
compatible with the AF points of almost all EOS cameras. The AF-
assist beam is compatible with 28mm and longer lenses. The effective
range is shown below.
Auto Zoom for Image Sensor Size
About Color Temperature Information Transmission
About the AF-Assist Beam
Position
Effective Range (m / ft)
Center
Approx. 0.7 - 10 / 2.3 - 32.8
Periphery
Approx. 0.7 - 5 / 2.3 - 16.4