Canon EOS 20D 取り扱いマニュアル
Using EOS-Dedicated, External Speedlites
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When using an external Speedlite, retract the built-in flash before
mounting the external Speedlite.
mounting the external Speedlite.
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If the EX-series Speedlite’s firing mode is set to TTL autoflash with the
Custom Function, the Speedlite will not fire.
Custom Function, the Speedlite will not fire.
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If autofocus cannot be achieved, the external, EOS-dedicated
Speedlite’s AF-assist beam (if the Speedlite has an AF-assist beam) will
be emitted automatically (except in <
Speedlite’s AF-assist beam (if the Speedlite has an AF-assist beam) will
be emitted automatically (except in <
3> <5> <7> modes).
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The EOS 20D is a Type-A camera that can use all the features of EX-
series Speedlites.
series Speedlites.
Using Non-Canon Flash Units
The EOS 20D can synchronize with compact, non-Canon flash units at
1/250 sec. or slower shutter speeds. With large studio flash, the sync
speed is 1/125 sec. or slower. Be sure to test the flash unit beforehand
to make sure it synchronizes properly with the camera.
1/250 sec. or slower shutter speeds. With large studio flash, the sync
speed is 1/125 sec. or slower. Be sure to test the flash unit beforehand
to make sure it synchronizes properly with the camera.
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The camera’s PC terminal is provided for flash units having a sync
cord. The PC terminal is threaded to prevent inadvertent disconnection.
cord. The PC terminal is threaded to prevent inadvertent disconnection.
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The camera’s PC terminal has no polarity so you can connect any
sync cord regardless of its polarity.
sync cord regardless of its polarity.
Sync Speed
PC Terminal
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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.
another camera brand, the camera may not operate properly and
malfunction may result.
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Also, do not connect to the camera’s PC terminal any flash unit requiring
250 V or more.
250 V or more.
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Do not attach a high-voltage flash unit on the camera’s hot shoe. It might
not work.
not work.
A Speedlite attached to the camera’s hot shoe and a flash unit connected to
the PC terminal can be used at the same time.
the PC terminal can be used at the same time.