Assertion: focus | /r/HasProperty | confirmed
Facets:
Source sentences:
text: PD AF in a focus-locking mode (e.g. "One-Shot" for Canon, "AF-S" for Nikon and Sony) is widely believed to be a "one measurement, one movement" open-loop control process, but focus is confirmed only when the AF sensor sees an in-focus subject.
text: Without worrying about which autofocus mode your camera is in, you simply focus on your subject by half-pressing the shutter button, then after focus is confirmed, you press and hold the AE-L / AF-L button on the back of the camera while continuing to half-press the shutter.