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Using Non-Canon Flash Units
Sync Speed
The EOS-1Ds 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 to see if it synchronizes properly with the camera.
PC Terminal
•
The camera’s PC terminal is provided for flash units having a sync cord. The PC terminal is
threaded to prevent inadvertent disconnection.
•
The camera’s PC terminal is compatible with any sync cord regardless of the polarity.
A flash unit attached to the camera’s hot shoe and a flash unit connected to the PC
terminal can be used at the same time.
•
If the camera is used with a flash unit or flash accessory dedicated to a another
camera brand, the camera may not operate properly and camera malfunction
may result.
Also, do not connect to the camera’s PC terminal any flash unit requiring 250 V or
more.
•
Do not use a high voltage flash on the hot shoe. It might not fire.
