http://www.adorama.com/alc/taginfo/lag time <p><span style="font-size: small;">There are really two kinds of shutter lag: The first and technical definition is the amount of time that it takes from depressing the camera&rsquo;s shutter release to when an image is saved onto a memory card. During that time, the camera determines proper exposure and focuses the lens. </span></p> http://www.adorama.com/alc/article/8332