In aperture-priority AE (mode A), you select the aperture and let the camera choose the shutter speed. Rotate the shutter speed dial to [A] and select the desired aperture.
Shutter speed: [A]
If the correct exposure can not be achieved at the selected aperture, the shutter speed will be displayed in red when the shutter button is pressed halfway. Adjust aperture until the correct exposure is achieved.
If the subject is outside the metering range of the camera, the shutter speed display will show “– – –”.
The slowest shutter speed available when [ON] is selected for [POWER MANAGEMENT] > [OVF POWER SAVE MODE] in the setup menu is 1/4 s.
Previewing Depth of Field
When [PREVIEW DEPTH OF FIELD] is assigned to a function button using the [FUNCTION (Fn) SETTING] option in the shooting menu, pressing the button stops aperture down to the selected setting, allowing depth of field to be previewed in the viewfinder or LCD monitor.