zMenu Function Settings 
Function settings particular to Live View shooting are explained here. The menu options under the [z] tab are explained below.
The functions settable in this menu screen only apply during Live View shooting. These functions do not take effect during viewfinder shooting.
Live View shoot.
Set Live View shooting to [Enable] or [Disable]. Even if [Disable] is set, you can still shoot movies (p.149).
AF mode
You can select [Live mode] (p.138), [uLive mode] (p.139), or [Quick mode] (p.143).
Grid display
With [Grid 1l] or [Grid 2m], you can display grid lines.
Expo. simulationN
Exposure simulation displays and simulates how the brightness of the actual image will look. The [Enable] and [Disable] settings are explained below:
Enable
The image brightness displayed will be close to the actual brightness of the resulting image. If you set exposure compensation, the image brightness will change accordingly.
Disable
The image is displayed at the standard brightness to make the Live View image easy to see.
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