The "2:3 pulldown" telecine process creates a slight error in the video signal compared to the original film frames that can be seen in the above image. This is one reason why films viewed on typical NTSC home equipment may not appear as smooth as when viewed in a cinema and PAL home equipment. The effect is particularly apparent in scenes that feature slow, steady camera movements. These appear slightly jerky when viewed in material that has been through the telecine process. The phenomenon is commonly referred to as telecine judder. Reversing the 2:3 pulldown telecine is discussed below.
