Canon EOS 5D MARK II Instruction Manual page 18

Flash Photography
EOS,dedicated, EX.series Speedlites
An EX-series Speedlite (sold separately) makes flash photography as
easy as normal shooting without flash.
For detailed instructions, see the EX-series Speediite's instruction
manual. This camera is a Type-A camera that can use all the features
of EX-series Speedlites.
Shoe-mount Speedlites Macro Lites
_ FE Lock
This enables you to attain a proper flash exposure for a specific part
of the subject. Aim the viewfinder center over the subject, then press
the <-X--> button and take the picture.
®_ Flash Exposure Compensation
In the same way as normal exposure compensation, you can set
exposure compensation for flash. You can set the flash exposure
compensation up to _+2stops in 1/3-stop increments (with the
camera).
Press the camera's <ISO._> button, then turn the <0> dial while
looking at the LCD panel or LCD monitor.
Using Non.EX.sedes Canon Speedlites
®_With an EZlEIEGIMLITL-series SpeedHte set in the TTL or A-TTL
autoflash mode, the flash can be fired at fuji output only.
Set the camera's shooting mode to <M> (manual exposure) or
<Av> (aperture-priority AE) and adjust the aperture setting before
shooting.
_ When using a Speedlite which has manual flash mode, shoot in the
manual flash mode.
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