É uma lotaria, questão de sorte ou azar, o LED Sony W705b que comprei recentemente não tem problemas de banding/DSE/clouding/edge bleeding e nem 500€ paguei por ela, mas a tecnologia LED é aquilo que sabemos e os defeitos que pelos vistos só agora dão por eles já andam cá desde sempre, de forma mais ou menos pronunciada.
*jeito; *facto.Sendo assim para o próximo ano vai ser o mesmo deste, nada de geito. O que não percebo é o fato das marcas apostarem tudo no 4k se ainda nem tecnologia existe ao contrario de começarem a apostar nos OLED's.
Não me está a parecer.^Em LED sinceramente não tenho grandes esperanças para muito mais, mas daqui a 2 anos espero já ver OLEDs de 50/60'' com valores a rondar 1000€.
http://www.hdtvtest.co.uk/news/xbr65x950b-201407223857.htmConclusion
Sony’s XBR-65X950B is an impressive local dimming LED LCD TV, boasting great contrast performance (especially in bright rooms) and color performance that’s highly accurate (at least to the old Rec.709 HDTV standard).
As is often the case, the inclusion of local dimming LED LCD alleviates some LCD issues (namely dark-room quality) and introduces at least one other (blooming, whereby the individual LED zones can be seen at work, lightening or darkening). We don’t feel that there’s ever been a completely bullet-proof example of full-array local dimming, at least not in this price range. (Sharp’s ELITE LED LCDs featured impressive contrast handling, provided the user sat dead-center in the viewing angle sweet spot, but featured color accuracy errors which were never resolved). With that said, provided we abided by the age-old LCD requirement of sitting perfectly face-on to the screen and not watching it from the sides, we were very happy with the contrast performance and overall picture quality.
Many will feel the XBR950B is too expensive (we’re not delighted with the screen uniformity at this price point), whereas others will feel that $8,000 US is an acceptable price for two high-end technologies (2160p Ultra HD and full array local dimming in one package).
If you can still find one, plasma TVs such as the Panasonic VT60 and ZT60 series, as well as Samsung’s F8500 displays will produce an overall better picture than any local dimming LED LCD television for considerably less money. Of course, those won’t give you Ultra HD resolution, and since they need a darker room to be seen at their best, they don’t have the flexibility of a display like the Sony XBR950 (which can produce a very bright picture for sun-filled rooms and a high-contrast dark-room experience for nighttime viewing). If you’re in the market for UHD and want the best contrast performance you can currently get at this resolution, the Sony XBR65X950B is a solid choice.
If you can still find one, plasma TVs such as the Panasonic VT60 and ZT60 series, as well asSamsung’s F8500 displays will produce an overall better picture than any local dimming LED LCD television for considerably less money.
http://www.avforums.com/review/sony-x8505-kd-55-49-65-x8505b-ultra-hd-led-lcd-4k-3d-tv-review.10556...
The 55X8505 is another superbly well engineered TV from Sony, carrying the usual understated elegance. The versatility of placement that the adjustable feet brings is also a great bit of thinking and there are enough connections around the back and sides to keep anybody happy, including two HDMI 2.0 compatible ports.
The menu systems aren't to our tastes and they should be easier to navigate but the means by which you do so, i.e. the remote controls, both work well. The standard controller is nothing to write home about really but the new 'One Flick' smart thing brings easier navigation around the Smart TV features.
Said features include a treasure trove of streaming and catch-up video services, an internet browser, media player and PVR recording and the emphasis of the platform is very much on content discovery. The X8505 also provides a built-in camera for Skype video calling and compatibility with the optional Bravia subwoofer, which works really well.
Despite the IPS panel, the X8505 still packs in enough contrast to please most, partly thanks to the quasi-dimming systems the picture controls include. That builds on some superbly accurate colours and near perfect screen uniformity to provide dazzling images, almost regardless of resolution. Naturally the higher the res, the better it looks but the scaling is of such a standard that anything from a quality DVD up is more than acceptable.
It's a shame that the 3D presentation isn't of such a high standard, and it looks as though the X8505 isn't capable of delivering Full HD to each eye via its passive system, but we would certainly find it acceptable as an occasional 3D watcher and it's not something likely to put off most prospective buyers.
It might not be quite the super high quality TV that the X9005 is but then the X8505 has a considerably lower price tag and we think it does more than enough to justify that. It's a 4K TV that gets almost everything totally right and well worthy of its AVForums Recommended Award.
Era isso que a W955B devia ser, mas em 2K.olha mais uma... TV 4K, desta vez a X850B/X8500B...
surprendentemente boa para uma TV com painel IPS, consegue ter uma contraste tão bom como algumas tvs com painel VA, apesar de o nivel de pretos não ser tão bom.
Panasonic confirm plasma-beating AX902 4K TV will release in Autumn
Earlier in the year, at the Panasonic Convention, the company spent quite a lot of time discussing a product relatively far off, in terms of a release date.
In fact, we argued that they spent too much time discussing the upcoming 4K AX902/ AX900 at the expense of the, then top-of-the-range, AX802, encouraging consumers to sit tight and wait for the real flagship.
As it transpired, the AX802 was a pretty darn good Ultra HD TV but the omission of the 4K Netflix service – owing to a technical oversight – meant it lacked any easy means by which to watch native content.
At IFA, yesterday, Panasonic addressed both these issues by confirming that the AX902 will be released this Autumn and a software update would see the AX800 Series newly compatible with 4K Netflix – which is great, and somewhat unexpected, news for existing owners.
The AX900 has been designed and engineered with the knowhow Panasonic has developed through the company’s heritage in delivering the highest picture quality (*cough plasma), and they also believe it will deliver the, ‘smartest and most intuitive home entertainment experience available.’
Panasonic really seem to have been putting in the R&D hours on this one!
As Panasonic rightly points out, reproducing deep blacks, whilst also retaining rich colours in dark scenes has been a long standing weakness of LCD TVs. To address these issues, Panasonic says the AX902 will deliver best-in-class black performance by using a Direct LED with full-array local dimming complemented with ‘Panasonic-unique’ Local Dimming Ultra technologies.
The company also boats that while other full array local dimming systems suffer from a ‘halo’ effect around moving bright objects because their local dimming fields lack sufficient brightness, the AX900 analyses the incoming video signal not in traditional 3 x 3 matrices, but across 5 x 5 matrices of local dimming fields and adjusts the brightness level of each individual field by extremely fine degrees - i.e. not just on/off. This, according to Panasonic should then provide smooth motion of bright objects, a high contrast ratio, deep, rich blacks and extremely fine gradation which retains detail even in the darkest scenes. It certainly sounds great in theory but we’ll reserve judgement on whether they’ve pulled it off until we get one in to test.
The AX900 engineers have also worked together closely with colleagues at Panasonic Hollywood Laboratories to ensure that the colours on the AX900 are exactly the same as the director intended. To achieve this Panasonic has adopted colour management technologies which have, until now, only been used to the same degree by professional studio monitors, such as their professional-standard 3D Look Up Tables with 8000 registry points which allow them to calibrate colour reproduction at extremely fine brightness steps, meaning that colour is reproduced accurately at any brightness level.
Studio-grade colour accuracy is another exciting prospect
Panasonic is the first company to use this technology in a consumer television and we must say that this is a particularly exciting development, for us, and again, we can’t wait to check it out properly.
One feature we are slightly dubious about is another industry first; the AX902 explicitly links its video signal processing to ambient light levels in order to deliver picture quality which, according to Panasonic, is a ‘perfect match for your living room.’ Now, in theory, that sounds good too but from our past experiences, ambient light sensing technologies can cause distracting luminance shifts so we’ll have to wait and see how this system will be any different - and the fact you can’t switch it off is curious.
This is one we are very excited about. Let’s just hope all the cutting edge technology works as described and the yet unannounced price isn’t too prohibitive. The AX900/ 902 will be available in 55 and 65-inch versions when it releases.
Who else is excited for this one?