Originally Posted by Ajira
I'm not sure what ghosting is. Please explain. =)
have you ever seen a mouse move that has "show trails" enabled? basically, it's a slight after image that occurs when something moves across the screen that leaves a visible trail.
when a monitor's pixel response rate is slower than the action happening on the screen, the same phenomenon happens -- before the screen has fully moved-on to the next frame, there's a slight wash where the previous frame is slightly visible. when the action is slow it's not noticeable, but when the action is very fast (as in some movies and action games) there's a noticeable "ghosting" effect that resembles the mouse pointer trail due to the pixel response rate not keeping up with the action.
25ms is slightly above the visible threshold for this effect in very fast-moving movie scenes and action games, whereas 16ms is below the visible threshold.