Flash Custom Functions - Canon MARK II EOS 5D Instruction Manual

Troubleshooting Guide
The flash does not fire.
Make sure the flash (or PC sync cord) is securely attached to the
camera.
If you use a non-Canon flash with Live View shooting, set [Silent
shoot.] to [Disable] (p.104).
The flash always fires at full output.
If you use a flash unit other than an EX-series Speedlite, the flash will
always be fired at full output (p.103).
When the [Flash metering mode] flash Custom Function is set to
[TTL (autoflash)], the flash will always be fired at full output (p.106).
Flash exposure compensation cannot be set.
If flash exposure compensation has already been set with the
Speedlite, flash exposure compensation cannot be set with the
camera. When the Speedlite's flash exposure compensation is set to
0, flash exposure compensation can be set with the camera.
Live View shooting is not possible.
For Live View shooting, use a memory card (a hard disk-type card is not
recommended). A hard disk-type card requires a lower temperature
range for operation than normal memory cards. If the temperature gets
too high, the Live View shooting may stop temporarily to prevent damage
to the card's hard disk. When the camera's internal temperature
decreases, you can resume Live View shooting (p.112).
I cannot take still photos at the shutter speed, aperture or ISO
speed I set during Live View shooting.
Set [Screen settings] to [Stills display] or [Exposure simulation]
(p.109).
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