EOS DIGITAL REBEL XTi / EOS 400D DIGITAL Instruction Manual
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Basically operates like a built-in flash for easy operation.
When an EX-series Speedlite is attached to the camera, almost all the
autoflash control is done by the camera. In other words, it is like a high-
output flash attached externally in place of the built-in flash. For detailed
procedures, see the EX-series Speedlite’s instruction manual. The
camera is a Type-A camera compatible with all features of EX-series
Speedlites.
The flash cannot be fired with an EZ/E/EG/ML/TL-series Speedlite
set in the TTL or A-TTL autoflash mode. Use the Speedlite’s manual
flash mode instead if provided.
The camera can synchronize with compact, non-Canon flash units at 1/
200 sec. or slower. Be sure to test the flash unit beforehand to make
sure it synchronizes properly with the camera.
External Speedlites
EOS-dedicated, EX-series Speedlites
Canon Speedlites other than the EX-series
Non-Canon Speedlites
Shoe-mount Speedlites Macro Lites
If the camera is used with a flash unit or flash accessory dedicated to
another camera brand, the camera may not operate properly and
malfunction may result.
Do not attach a high-voltage flash unit on the camera’s hot shoe. It might
not work.