The shutter speed of the HDW-650P is selectable down to a 16-frame period (in 2-, 3-, 4-, 5-, 6-, 7-, 8-, and 16-frame periods).
During this frame period, electrical charges accumulate on the CCDs, which dramatically increases sensitivity. This helps camera operators to shoot in extremely dark environments.
The Slow Shutter function also allows operators to use shutter speeds longer than the frame rate, for enhanced shooting creativity. For example, when shooting a moving object, to create intentional blurring of the image.
*Requires a software upgrade, planned to be available in spring 2009.