Originally Posted by Weags
In general when people are looking for imperfections in the picture they get up as close as they can to marvel at the amount of activity going on it their picture. I can guarantee you if you are less than a foot away from your tv you will see noise. If not I want what you got. I too can sit 4 ft away from my 65 in DLP and have virtually no artifacts , not that I'd make a habit of it though. But when a foot away I can see imperfections even on the best source. This is why I asked how far away he is when he notices the noise. It seems he is happy with the picture until he gets up close to analyze it. Now once he sees the imperfections up close ,he feels he's not getting the detail he should be with his new tv and this simply isn't the case. If the artifacts show up at a reasonable distance then I'd be concerned.
I'm also guessing your tv has been calibrated to some extent by you or a professional, or maybe you're the professional.IMO this makes a huge difference for most sets I see. Either way this is not the case for a strong majority of HDTV owners and I'd be willing to bet that virtually every non calibrated and even most calibrated HDTVs will exhibit some form of picture noise at close viewing distances. What that distance is will vary from tv to tv, depending on the quality of the unit itself ,the source and the picture adjustments made.
All in all in my unscientific opinion , if your tv looks awesome when at your normal viewing distance I wouldn't worry about bottlenecks. I would calibrate it either professionally or with a DIY disc and enjoy it, don't overanalyze it, you will go nuts. As good as it looks it's never gonna be perfect from every angle and every distance or with every source, not yet anyways.
Agree about a normal viewing distance for PQ tests. Acquired a high-end pro/designer plasma ( TH-65VX100U
) in early '09 to help minimize most display problems outlined by AVSers. Still find the images remarkably good, as did many reviewers
. Even very close to the screen--very rare viewing here--there's no obvious noise on most HD/SD images. Don't know if that's mostly the high-end plasma tech, such as 18-bit video processing, or other factors, since I don't view other displays. Calibration might tweak the white balance a bit, but the plots (reviews link) seem good enough; also agree about over-analysis.
OP contrasted still-camera versus HD images, such as freeze-frame Blu-rays. With 24p Blu-ray player outputs, seems like video processor deinterlacing quality wouldn't be involved. But Blu-ray discs or other HD, as I outlined earlier, vary widely in quality so it's not surprising a static-camera shot looks crisper at least. And a still-camera image might appear 'sharper' only due to edge enhancement, while still lacking higher resolutions, as Figs. 6 and 8 in this Arri pdf paper
When HD motion-video is involved the deinterlacing circuits have a stronger role in 1080p PQ. Panny's pro-model designers opted for special deinterlacing circuits, finding others inadequate. But resolution pumping
, AFAIK, is still a general 1080p problem (when certain still and motion sequences kick in adaptive deinterlacing), creating crisp, then blurred images.
Here, have only noticed it with a few 24p-captured motion sequences on Discovery HD Threater's Sunrise-Earth-type programs involving constant motion. In the St. Georges River episode, for example, finally detailed fall leaves flicker constantly because of the boat speed and capture rate. Discovered only last week that my VX100's mosquito-noise filter helps somewhat, but of course that involves some resolution trimming. Less noticeable, unless you concentrate on it, is the blurring from resolution pumping of tennis net webbing when 1080/50i/60i (i/p) cameras are shifted horizontally even slightly. -- John