Originally Posted by nidi
back when the VPS-1 came out (mid 90's ?) this may have been the case that it was at the top of performance, but it's still a 2D design, maybe even
a 3 line design. and those designs have been overtaken by much better
Michael (and others who have the same general understanding) -
The problem is that while the very best 3D filters are technically better than their 2D counterparts, they do NOT yield good results when their signal is deinterlaced by ANY subsequent VP (including the latest Lumagen X- series, which are the best at this).
The steep-slope and time-based 3D filter process yields a signal that almost disintegrates when the individual fields are separated. NIN is dead on: once you see it and recognize it for what it is, it's awfully annoying and almost unacceptable.
Upscaling this result, especially onto a big screen, exacerbates the problem.
So the very best 2D filters will provide the best "real world" results. No checkerboard patterns, no dot patterns, no fringing, no delays, no millisecond B&W flashes. Just a wonderfully rich, smooth picture.
Anybody who has the X9 - look carefully at "The Fifth Element" or similar through the S-Video output through the filter's default settings. (The scene where Leeloo is "constructed"/born is particularly troublesome.) Then go back and adjust the filter for its lowest settings (forcing it to stay in 2D as long as possible). You will easily see an improvement in reduced artifacts.
The X0 Composite output eliminates even this.
Yes, on completely still shots and/or freeze-frames, the 3D filter will eliminate a slight bit of dot crawl, and provide slightly sharper vertical delineation.
But this frame to frame repeat simply doesn't happen much in actual movie viewing. A very good 2D filter will always a better, more "watchable" result for motion pictures whenever the signal is deinterlaced and upscaled. You really don't see much "dot crawl" as a practical matter. And it's far less evil than the "dot matrix."
[Hi, NIN and TK and others. Just stepped in here quickly ...