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.

•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.

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.

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