You can focus without pressing the shutter button halfway down. The settings for the focus mode dial will be applied.
- Press the AF-ON (AF On) button while shooting in autofocus mode.
- Set [AF w/ shutter] to [Off] when you do not want to perform auto focusing using the shutter button.
- Set [AF w/ shutter], [Pre-AF], and [Eye-Start AF] to [Off] to focus at a specific shooting distance predicting the position of the subject.