Canon EOS 5D Mark III Standard Zoom Lens Kit Owner's Manual

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An EX-series Speedlite (sold separately) makes flash photography as 
easy as normal shooting.
For detailed instructions, refer to the EX-series Speedlite’s 
instruction manual. This camera is a Type-A camera that can use all 
the features of EX-series Speedlites.
To set the flash functions and flash Custom Functions with the camera’s 
menu, see pages 191-196.

 

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 camera’s <B> button and take the picture.

 

Flash exposure compensation
In the same way as normal exposure compensation, flash exposure 
compensation can be set. You can set flash exposure compensation 
up to ±3 stops in 1/3-stop increments.
Press the camera’s <m> button, then turn the <5> dial while 
looking in the viewfinder or at the LCD panel.

D

Shoe-mount Speedlites

Macro Lites

If [z2: Auto Lighting Optimizer] (p.142) is not set to [Disable], the image 
may still look bright even if a darker flash exposure compensation amount 
has been set.

When it is difficult to achieve focus with autofocus, the EOS-dedicated, 
external Speedlite may automatically emit the AF-assist beam.