A collar around the shutter release sets the motor drive.

Now fully press down the shutter release to take the picture.

His clenched left hand, probably holding the shutter release, provides the final touch.

The solution is a focus hold feature in the shutter release.

In this position, a small button on the right bottom side of the phone functions as the shutter release.

The picture can be zapped by pushing the shutter release again.

Next to it is an aluminum circle that's the shutter release.

The shutter release is redesigned, with several distinct levels of pressure.

An automatic camera changes these things by itself when the shutter release is pressed.

You know that difference exists, and not everyone who can press the shutter release has the right to call themselves a professional.