Here's what I saw in the D300S specs: Imagine a scene where silence is essential, a school play, for example, or any situation where you don’t want your subject to be aware that you’re shooting, such as wildlife photography. Simply select “Q” on the release mode dial to reduce the sound of the camera’s mirror-down during shooting. You can lessen the sound of the shutter release, too, by keeping the shutter depressed after shooting, then moving the camera before releasing it.This feature first surfaced in the early beginnings of the Leica M8 when owners were perplexed why the shutter of the new and first digital Leica-M rangefinder was so loud compared to the stealthy film-based M. Users started to discuss what Leica can do to improve the situation and out came the suggestion to allow one to hold on to the shutter release without re-cocking and only re-cock after the finger releases the button. It was introduced early this year to all M8 via firmware updates. It is, indeed, nice to see Nikon implemented this idea, albeit borrowed, in the D300S. Bravo, Nikon!