Auto Zoom For Image Sensor Size; About Color Temperature Information Transmission; About The Af-Assist Beam - Canon 0298B002 Instruction Manual

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, <s> 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 <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.

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 AF-
assist beam is compatible with 28mm and longer lenses. The effective
range is shown below.
Position
Periphery
Effective Range (m / ft)
Center Approx. 0.7 - 10 / 2.3 - 32.8
Approx. 0.7 - 5 / 2.3 - 16.4
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