Commonly employed on
digital cameras, 2-stage shutter release is a
shutter release, that when pressed halfway, it activates the autofocus and the
light meter of the camera, setting them to achieve correct focus and exposure.
Holding the release at mid-course maintains the focusing point and allows for
re-composition if desired. A further press on the shutter release takes the
picture.
See "A
Quick Guide to Digital Cameras" in the
Quick Reference section of
Webopedia.
See also Megapixel.net for news, reviews
and a active community for digital camera and photography enthusiasts.