Why press the shutter button halfway?
When using an auto focus camera, you need to operate the shutter button in two steps. The first move is to depress the shutter button halfway to allow the camera to detect and fix the focal point and make other automatic adjustments. When those functions are complete a green light appears. When the green light is blinking, it means the camera is not properly focused. When shooting, compose your scene and press your housing's shutter lever halfway to focus on your subject. When you're ready, press the shutter lever all the way to take the shot.


Caution



