A raised button emplacement on the top left of the camera includes two buttons, each of which presents two parameters in the viewfinder when pressed.
Pressing the AF/Metering button presents focus mode options at the bottom of the screen and metering modes at the top - spinning the rear dial changes AF mode, while the front one sets metering. The other button gives control over drive mode and High Dynamic Range shooting.
There is also the option to have these buttons' functions change, when you flip the 2x2 switch on the right of the viewfinder.