Originally Posted by coiken
Great stuff, happy to see it's not me going crazy but just us Europeans getting differnt setting menus :-))
My best guess would be Panasonic doesn't like Europeans
or maybe they are going to add/change some features/settings in the next firmware release.
Originally Posted by coiken
Are you sure the 1080p Pure Direct : On is a good option, I think I saw somewhere to not enable this...
Source : HDtvtest.co.uk/
1080p Pure Direct” mode, which promises to cut out extraneous image processing for an image that’s more true to the source.
The new 1080p Pure Direct mode
Upon hearing of a “Pure Direct” mode, videophiles’ ears will prick up, since any mode which bypasses unwanted processing usually results in higher image quality. We scoured test patterns and high quality video material at length, and we found that the only difference with this mode is the one which Panasonic advertised: with the 1080p Pure Direct mode turned on, the full chroma bandwidth of the video was preserved, meaning that tiny coloured details were not blurred out by the TV. Of course, to see tiny coloured details, they need to exist in the source to start with. There are a couple of prerequisites regarding this control that we’ll mention at the end of this section.
Higher chroma bandwidth is going to be of most benefit to material with small coloured details and edges, such as high quality, HD-sourced, saturated 2D animation. A Chief Engineer from Panasonic made a well-observed point a couple of years ago in a tech paper on a related subject, when he mentioned that higher chroma resolution also causes film grain to appear more natural and, in their words, less “sticky”. However, on a television-sized display, we feel that the differences, while welcome, are subtle.
One misconception we’ve come across online is that higher chroma resolution results in more saturated colours, but this is determined by the display’s colour gamut, not by signal bandwidth (current Plasma TVs have absolutely no problem meeting the colour requirements of HDTV, and exceeding them isn’t even a good idea). High chroma bandwidth simply means that tiny coloured details will not be blurred out by the television.
All video sources available to consumers – with the exception of PCs and HD video game consoles – use chroma subsampling as a form of compression, that is, to reduce the storage requirements. Chroma subsampling is where the coloured data in an image is stored at a lower resolution than the black and white luminance data. In the current 1920×1080 HDTV system most commonly used on Blu-ray Disc, only the black and white luminance portion of the video is actually 1920×1080. The resolution of the coloured “layer” which is composited on top of that black and white image is effectively 960×540, although attempts at enhancing chroma resolution can increase the clarity of these fine details. The thinking goes that because our eyes are much better at detecting fine details in brightness, but not in colour, that every second colour pixel can be thrown away and guessed from its neighbours (or, with more advanced processing, more intelligently reconstructed). Panasonic sells Blu-ray players with “Reference Chroma Processing”, which promise to better reconstruct the details lost to chroma sub-sampling, and then output the chroma-upscaled image as a full-bandwidth 4:4:4 signal over HDMI. Ironically, the effects of these players will have mostly been lost on previous Panasonic plasmas due to their inability to display full chroma bandwidth! We assume that the “1080p Pure Direct” feature has been added to address this irony, and that it is intended for use with these advanced BD players, meaning that customers now have an entirely Panasonic-branded solution for enhanced chroma detail from Blu-ray.
Because of the fact that nearly all video sources have been compromised in this way, preserving full chroma bandwidth does not seem to be a priority for TV manufacturers. We also understand that using lower resolution chroma processing in a video processor chip allows the complexity and cost to be reduced, and manufacturers like to route all signals through these chips to provide essential features like deinterlacing, scaling, and other video “enhancements” like noise reduction. However, a 1080p signal being displayed on a 1080p panel doesn’t need deinterlaced, doesn’t need scaled, and because we just want to see the video as-is without any revisions, we don’t want noise reduction either. So, although it barely makes a difference to image quality, there’s no reason for us not to turn on the 1080p Pure Direct mode.
We found that the option to turn the feature on could be a little bit elusive. The [1080p Pure Direct] menu option should appear in the [Advanced Settings] menu underneath “Gamma”. But, it only appears with certain types of signal. It does not appear with any type of RGB input over HDMI, which is strange, because all digital RGB signals are 4:4:4. And, the option does not appear with 24p 4:2:2 signals, such as those sent by most Blu-ray players – although when we tested this signal type, we found that there was no need for the choice to appear because the chroma bandwidth was not being compromised, anyway. Strangely, 50p and 60p 4:2:2 signals did cause the option to appear. With the HDMI output of a source set to 4:4:4 mode, the control was selectable in all cases, and we advise turning it on. If you’re interested in getting the last drop of performance out of your setup
, we recommend grabbing a copy of the Spears & Munsil test disc and checking out the Chroma patterns on it under various player configurations. On a TV-sized display, don’t expect to see any huge difference, though.