Canon EOS 5D Mark II Instruction Manual - Page 102

Using Non-Canon Flash Units

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Using Non-Canon Flash Units Sync Speed The EOS 5D can synchronize with compact, non-Canon flash units at 1/ 200 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 has no polarity so you can connect any sync cord regardless of its polarity. If the camera is used with a flash unit (with dedicated flash contacts) or flash accessory dedicated to 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 higher voltage. Do not attach a high voltage flash unit on the camera's hot shoe. It might 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. 102

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102
The EOS 5D can synchronize with compact, non-Canon flash units at 1/
200 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.
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 has no polarity so you can connect any
sync cord regardless of its polarity.
Using Non-Canon Flash Units
Sync Speed
PC Terminal
If the camera is used with a flash unit (with dedicated flash contacts) or
flash accessory dedicated to 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
higher voltage.
Do not attach a high voltage flash unit on the camera’s hot shoe. It might
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.