Originally Posted by johncourt
I own both the sony 590 and panny 220. BR PQ is the same on both units, but DVD's tend to look quite a bit better on the panny. The panny dvd upconversion looks sharper but also generates more artifacts. I have no information on oppo dvd upconversion in comparison to a 2012 sony or panasonic.
There have been anecdotal reports of oppo BR PQ being superior if only marginally, but I don't find them credible. I believe Oppo uses a marvell processor in some models, and it's processing can't be defeated/turned off completely even in "direct" mode, so that could be responsible for the differences in PQ. Having said that, it's impossible for oppo or any company, for that matter, to produce an image with additional pixels. Any difference is due either to 'sweetening' (edge enhancement, contrast boost, etc) or a defect with the player (see sony rgb issues).
The results are not anecdotal, but the product of a good set of tests done by these folks
. The article shows where the problem is and why it matters. In the second article
, they show that when using a player that has issues to calibrate your display, you may take a properly calibrated display and introduce problems in the display settings.
Nothing is implanting more pixels, since the 1920 x 1080 of 1080p is set in stone, the issues come into how the pixels that are being displayed are being set, what color they are being set to and the effects on the overall viewing experience. If, as the first article shows, the Oppo correctly maps the pixel data read from the disk to the correct color on the display, but the Sony player doesn't, then pixel data is being displayed incorrectly.
An example from the article of the mapping of colors as they measured it:
Sony's color mapping is incorrect throughout, sending data to the display that is different from what is on the disk.
Oppo's color mapping is exact.
The effect this has is that the color you see is shifted off slightly, and you may not see the brightest colors correctly, since you've squashed any differentiation between them. Other colors are off as well.
In the final analysis, you can decide for yourself whether having a correct display of the pixels is worth it to you, but the fact that it's happening or not happening is documented here.