Jake Strickbine |
June 9th, 2006 08:04 AM |
Quote:
Originally Posted by John Mitchell
Jake - you're entitled to your opinion of course. IMO I think the majority of LCD and Plasma displays out there do not stand up. I recently found one I did like which to my eyes looked relatively smooth and artifact free: the Samsung LA40M61B, but to me most of the sets out there introduced a significant amount of post processing artifacts that were easy to see, whether from an HD box or upscaled standard def. I don't think you can say whether one point of view is "true" or not - it's an opinion.
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John, I'm sorry, but I have to respectfully disagree with regard to 1080/720 cross conversion. I don't think this is a matter of opinion at all- there's a sound technical process that has been in place for 5+ years in order to allow pristine cross conversion between the two major HD input types, and all displays do it the same way. Cross conversion between 720 and 1080 sources in HD displays is a simple matter of rescaling. No deinterlacing is required to display 1080i on a 720p set. 720p displays are fixed pixel by nature, and they run at 60hz, which is the key- the 1080i source is simply rescaled, and the fields are displayed as if they were frames at 720p/60 (59.94 fps). There's no field interpolation and no introduction of new motion artifacting caused by this process..
In the case of 720p to 1080i conversion, the process is simple as well. It's just a re-scale, and then artificial fields (artificial because inter-field motion will not be present in the signal) are simply assigned to the material as it's piped through. Again, this is non-destructive, and produces excellent results.
I would agree with you that many plasma and LCD sets sell because of ergonomics rather than performance, and all HD displays have a tendency to "junk" up their picture with post processing effects such as edge enhancement, black compression, etc.- but there's no technical reason for these displays to offer noticeably better performance when displaying 720p sources vs. 1080i ones. As a matter of fact, many of the '720p' plasma and LCD sets actually run a native res of 1366x768 or even 1024x768, and have to rescale everything you watch on them, whether the signal is standard def, 720p, or 1080i.
No matter how you want to slice it, whether our content is authored at 720p, 1080i, or 1080p, you can't escape the fact that the majority of displays you view it on will be using some sort of post signal processing to make it happen, and we need to be comfortable with that.
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