Styling, Connections and Menus
The Picture menu contains a choice of Viewing Modes including Dynamic, Normal, Cinema, True Cinema and Game. This sub-menu also includes all the usual picture controls such as Contrast for adjusting the luminance of the video signal, Brightness for adjusting the black level, Colour control and Sharpness. There is Vivid Colour which boosts the luminance of the colours and C.A.T.S. (Contrast Automatic Tracking System) which is designed to adjust picture contrast according to ambient light in the room but this can cause fluctuations in the image and is best left off. Finally there is a P-NR (Noise Reduction) function that is designed to reduce compression artefacts but we found this control to be of no real benefit so turned it off.
Out-of-the-Box MeasurementsTypically out-of-the-box Standard or Normal modes provide an image awash with blue energy, partly as a measure to combat a bright living room but more to fool the eye in to thinking whites are somehow ‘whiter’ than is the reality. In actual fact, there’s an industry standard for the colour and temperature of white that’s nothing like what is represented below via the RGB Balance Graph, which gives an indication of the relative amount of Red, Blue and Green in the greyscale, i.e from black to white. If we can get this mix correct, we’ll be providing a neutral background on which the colour signal(s) can be portrayed correctly. The X50 is, true to form, accentuating the blue energy to a very large degree which brings a highly unpalatable washed-out aspect to on-screen images. There was so much blue, in fact, that we had to rescale the RGB and DeltaE charts to display the full story. During a calibration we’d usually aim to bring Delta Errors to below 3 across the board to make them indistinguishable to the human eye, so the fact that some are as high as 12 tells its own story.
Since the X50 doesn’t possess any fine calibration controls in the user menus it gives us chance to evaluate what the typical viewer will be seeing, provided they have the knowledge and/or sense to switch in to the most accurate, True Cinema, picture mode. By comparison to the Normal mode, greyscale tracking is now far more acceptable. Forced to choose having an excess of anything it wouldn’t be green as it’s more noticeable to the eye but the excess here is toward the acceptable side. We could certainly sense a slight cast to pictures but nothing intolerable and because of the accuracy of the colours (see below) content was generally now looking very good.
Video ProcessingThe X50 displayed all the same strengths and shortcomings we saw in the XT50. Scaling of standard definition signals was excellent but the lack of a film mode meant it couldn’t pick up on film content sent in an interlaced signal, so if you’re still using a DVD player connected (likely) by Scart, you might notice some unnecessary deinterlacing steps and resultant moire type patterns and break up of solid lines. The actual deinterlacing of video content was sub-par also, at 1080i, with some visible scaling artefacts around edges. One of the major challenges for a 720p panel is to display a 1080p24 signal cleanly and correctly and the X50 also struggled a little here too with, again, some scaling artefacts present but with a screen this size they are difficult to detect from average viewing distances.
Contrast and Black LevelThe Panasonic TX-P42X50 proved a very good performer in this test and whilst it couldn’t quite scale the heights the 1080p Viera’s are capable of reaching, an averaged black level of 0.03 cd/m2 , derived from an ANSI checkerboard pattern, is no cause for embarrassment and will leave almost all LED LCD TVs for dead. Shadow detailing is also impressive but the filter isn’t quite so good and those blacks will wash out in brighter viewing environments.
Gaming PerformanceThe 2012 Panasonic’s have been noticeably more sluggish than in years gone by when it comes to gaming latency; until now. The X50 would make an excellent console companion with its 720p resolution matching that of most of the PS3, Xbox 360 and Wii U’s catalogue and an input lag below 30 milliseconds – less than 1 frame of a typical title.
- Standby: 0.0W
- Out-of-the-Box – Normal Mode: 182W
- Calibrated – True Cinema Mode: 184W
Plasmas generally have a nice sense of fluidity to motion and the X50 furthers this reputation; sure if you scrutinise it’s possible to see a double imaging around edges but, again, at typical viewing distances with a screen of this size they were very hard to detect and the X50 makes itself suitable as an all-purpose TV, catering to sports and movie viewers with equal grace. Of course, unlike most LED/LCD TVs, viewing angles aren’t a consideration with TX-P42X50B able to keep both contrast levels and colours intact, even at the most acute and the fact that the panel resolution is closer to SD than it is full HD means it’s able to handle low rent standard definition with more aplomb than most of its Full HD cousins. If you’re restricted to a television no bigger than 42 inches and you don’t sit very close then the Panasonic TX-P42X50B is certainly worth a look.
- Great blacks
- Believable colours
- Impressive scaling with SD content
- Low latency for gamers
- Some visible scaling artefacts and loss of resolution up close
- Not the best in bright lights
- Not even a 2 point white balance control
- No 2:2 cadence detection
Panasonic X50 (TX-P42X50) 42 Inch Plasma TV Review
The aforementioned lack of calibration options meant we had to settle for whatever the True Cinema picture mode could provide. Fortunately, the X50 proved quite accurate to the industry standards, especially with colours, and a minor green cast was the only real noticeable anomaly. Generally picture quality was quite striking, helped in no small part by excellent black levels and strong dynamic range and it was only when very close up that any scaling artefacts or loss of resolution were visible with 1080p content. Console gamers would also be very well served by the Panasonic X50 with its low input latency and resolution match for most games.
The Panasonic X50 has no delusions of grandeur. It doesn’t try to squeeze in 3D or pack a load of features its target audience will probably never use but it does cope with both high definition and standard content very well, with a satisfying mixture of rich, believable colours and great contrast levels. No frills? That’s for sure but that doesn’t stop it from gaining a deserved AVForums Recommended Award.
Contrast/Dynamic Range/Black Level
Ease Of Use
Value for Money
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