This has come up before in another websites review and other forums discussion concerning the new Panasonic range. This 24p option is not what it seems,
The consensus from users tends to be to turn the Panasonic option off.
Part of a review
The Panasonic TX37LZD85 LCD HDTV can accept 24p Input and display it as such, meaing that no telecine judder will be visible from Blu-ray Discs outputting in this mode.
While we're on the subject of 24p, it's worth discussing the "24p Film" option tucked away in the LCD television's "Setup" menu. This isn't a toggle for 24p Processing, but instead controls a Motion Interpolation mode which attempts to give 24fps Film content a more video-like look. Because film sources have 24 frames per second, creating new frames to boost the motion fluidity requires that the TV's video processor tracks the motion of objects in the input frames, and uses this data to creates new in-between ones.
The biggest problem with this, though, is that films aren't that simple. Any sort of camera panning or complicated movement will confuse such a system and inevitabily create motion artefacts, unless the source features little to no complex motion to start with. For example, in Juno, there's a scene where the film's main character rides a bike down the street of her neighbourhood, with the camera trucking left.
The movement of the camera and the spinning wheels on the bike mean that the bike actually distorts into blocks and even intermittently disappears. This in itself isn't a failing of the Panasonic TX37LZD85, because any other HDTV with this option will create the same sort of problems. Needless to say, I recommend turning off this mode and watching films at their original frame rate!
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