\ 4K Ultra HD TV guide: 三月 2015

2015年3月18日星期三

Samsung UNHU8550 series review: Superb 4K picture doesn't come cheap

If you must have a 4K TV now, the Samsung UNHU8550 is the best overall choice.
Yes, it still costs hundreds more than non-4K LCD TVs, and the difference in extra detail between 4K and 1080p is still basically invisible at normal screen sizes and viewing distances. But unlike Samsung's flat 1080p TVs, this one incorporates the company's best picture-enhancing features, namely local dimming, leading to a better image regardless of resolution.
That appears to be the trend among all LCD LCD TV makers, as we predicted. They reserve their best picture quality for 4K TVs, so if you want a premium image, you'll generally have to get a 4K TV whether you can see the extra detail or not. That's similar to what happened with 3D TVs, and supports the trend that 4K is "just another feature" on TVs' seemingly endless lists of bullet points.
Among 4K sets we've tested, just one, the Sony XBR-X900B, has a better picture than this Samsung. The company's own HU9000 is also an excellent performer, but the curve makes it a worse choice for image-quality aficionados than the flat HU8550. The cheaper Vizio P series currently suffers a couple of flaws that likewise make it inferior. Until Vizio issues an update to that set, or actually releases an aggressively-priced 65-inch R series, the HU8550 is the best-performing option among current 4K sets with somewhat reasonable price tags.
Series information: I performed a hands-on evaluation of the Samsung UN60HU8550, but this review also applies to the other screen sizes in the series. All sizes have identical specs and according to the manufacturer should provide very similar picture quality.
Sarah Tew/CNET

Design

The understated exterior of the HU8550 does less than the typical Samsung TV to stand out, but still looks great. The low-profile stand helps the panel seem to levitate above tabletop (although it doesn't swivel). The silver brushed metal of the base is a little gaudy for my taste, but the panel itself -- with its thin bezel, ribbon of chrome around the edge and the smallest "Samsung" logo yet -- is very attractive, albeit not quite as beautiful as the curvy HU9000.
Sarah Tew/CNET
The TV ships with a pair of remotes, Samsung's standard wand and a touchpad-equipped motion-sensitive pod that I consider the best TV clicker yet. The only difference between the one included on step-down models and the flagship version that ships with the HU8550 is the latter's silver color and the presence of dedicated button for the Multi-Screen feature.
Sarah Tew/CNET
As with all fancy TV remotes, it becomes irrelevant if you plan to use a universal model like my favorite, the Harmony Home Control -- an even more likely scenario on a flagship-level TV like this one. Check out my full write-up and video on the remote for more details.
Sarah Tew/CNET
Key TV features
Display technology:LCDLED backlight:Edge-lit with local dimming
Screen shape:FlatResolution:4K (UHD)
Smart TV:YesRemote:Standard + Touchpad, Motion
Cable box control:YesIR blaster:External
3D technology:Active3D glasses included:Four pairs
Screen finish:GlossyRefresh rate:120Hz
DLNA-compliant:Photo/Music/VideoUSB media:Photo/Music/Video
Screen mirroring:YesControl via appYes
Other: Upgradeable processing and inputs via OneConnect box; voice search via remote; cable box integration and control via IR blaster; Optional extra 3D glasses (model SSG-5150GB, $20 list); Optional Bluetooth wireless keyboard (model VG-KBD2000, $99 list)

Features

Not quite as feature-festooned as the Rod of Lordly Might HU9000 series, the HU8550 is nonetheless among the most "loaded" TVs you can buy.
Beyond 4K resolution, which, like all 4K LED LCDs these days, amounts to 3,840x2,160 pixels, the HU8550's most important picture-centric feature is local dimming on its edge-lit LED backlight. According to Samsung it sports half as many zones than the HU9000, but as usual the company won't specify the actual number of dimming zones on any of its TVs. It did tell us that the HU8550 matches the number of dimming zones on the HU8700 series of curved 4K TVs, that the 85S9 has roughly 20 times as many zones as the 9000, and that none of Samsung's other LED TVs for 2014 have hardware-based local dimming.
Sarah Tew/CNET
Like nearly all current 4K TVs, the HU8550 uses a panel with a 120Hz refresh rate. Samsung's specifications don't mention this number, instead going with "Clear Motion Rate 1200," the kind of impressive-sounding-yet-fake number common to many TV makers these days. In Samsung's case, it incorporates a scanning backlight and optional black frame insertion. Meanwhile the HU9000 has a CMR of 1440, or 240 make-believe units higher than the HU8550; Samsung says the difference reflects the " reflect the different backlight scanning blocks or zones." The HU8550 is also missing some of the HU9000's fancier-sounding picture enhancements, namely Auto Depth Enhancer and PurColor, but we doubt you'll miss them.
The cavalcade of features extends beyond the picture. Probably the most unique is compatibility Samsung's OneConnect box. The HU8550 has a dedicated port that can be connected to future external breakout boxes, similar to the box that ships today with models like the HU9000. Much like the company's standard Evolution Kits , next year and in future years Samsung will sell OneConnect boxes featuring enhanced processing, new Smart TV features, different connectivity, and/or whatever else the company dreams up. Samsung just began selling its SEK-2500U, the 2014 OneConnect Evolution Kit compatible with 2013 sets like the S9 and F9000.
Sarah Tew/CNET
Of course the HU8550 has 3D capability, and Samsung includes four pair of 3D glasses. They're kind of cheap-feeling, however, so big-spending 3D aficionados may want to avail themselves of the TV's adherence to the full-HD 3D standard to purchase nicer third-party glasses. Like every past (and likely future) Samsung TV, the HU8550 uses active 3D set technology, which is too bad considering thatpassive 3D is one of the best uses for all the pixels of 4K.
The HU8550 also has the same Multi-screen feature found on the HU9000 (below). A dedicated button on the remote splits the screen in half, placing a window showing the action from the currently active input on the left and on the right your choice of the Web browser, a handful of compatible apps (including HBO Go, MLB.TV and Amazon Instant Video -- but most, including Netflix, Facebook and Twitter, won't yet work in Multi mode) or a specialized YouTube app. Think of M. Screen as a turbo-charged picture-in-picture designed to combine regular and Smart TV on the same screen. For more info check out the HU9000 review; I didn't retest it here.
Sarah Tew/CNET
The HU8550 works with Samsung's exclusive "UHD content packs," which are basically external hard drives filled with a few 4K movies. Unless you're desperate to watch 4K and are willing to pay through the nose, they're not worth buying on their own (although they're often bundled with the TV). On the other hand, Sony's FMP-X10 4K video player is now "unlocked" to work with other brands, so while it too is very expensive, especially when you figure the cost of Sony's 4K content, it's a better choice for big spenders who want 4K content today.
Sarah Tew/CNET
Smart TV and cable box control: Aside from M. Screen the UNHU8550 shares pretty much the same Smart and On TV/cable box control features as the rest of Samsung's 2014 line. I tested it thoroughly in previous reviews, so I won't go over everything again here.
One highlight is that Samsung has more TV apps than anyone, including, in the US, an exclusive on the HBO Go app for TVs that aren't powered by Roku. With the motion remote and voice control, the system is easy-to-use and well polished, especially when it comes to entering searches or navigating the myriad onscreen menus. I prefer the simpler design of LG's Web OS suite but Samsung's visually complex, multiscreen system has its advantages. Neither one is as good as Roku TV, however.
For a much more thorough rundown of the system's pluses and minuses, check out the UNH6400 review.
Sarah Tew/CNET
Picture settings: In true Samsung tradition there's plenty on tap here, including 2-point and 10-point grayscale control, an excellent color management system, and four picture presets. Samsung's class-leading Auto Motion Plus dejudder control not only turns the Soap Opera Effect on or off, it allows adjustment of both blur reduction and smoothness -- and includes a setting called LED Clear Motion that improved motion resolution further, albeit along with some visible flicker (see Video processing below).
The 8550 is missing a few of the extras such as the HU9000's "Cinema Black" option that dims horizontal letterbox bars, the HU8550 does get three levels for local dimming and a UHD HDMI Color mode. Samsung says engaging this setting "allows the TV to 'see' and display the 4:4:4 content that may potentially be included in HDMI 2.0-compatible sources." Such signals are essentially nonexistent today, so I didn't test the efficacy of this mode.
Sarah Tew/CNET
Connectivity: The back panel of the HU8550 includes everything you'll need for a modern setup. Four HDMI ports, three USB (although just one is 3.0), and an optical digital output do the digital heavy lifting, while analog video is served by a component-video port that's shared with composite video, and a second AV input with only composite video. There's no VGA-style PC input, but there is a port for the included wired IR blaster. Unlike Panasonic, Samsung doesn't offer DisplayPort, but there's no reason a future OneConnect box couldn't add that port, or others.
If you're getting deja vu, that's because the HU8550 impressively matches the connectivity of the step-up HU9000. All four of the HDMI ports support HDMI 2.0, and in our tests all were capable of accepting 4K at 60 frames per second. Samsung told us three of the four can accept it at 4:4:4 chroma subsampling rate, while the fourth (the MHL-compatible one) can accept 4K/60 at 4:2:0. That MHL-compatible input (Input 3, if you're counting) is also the only one that's HDCP 2.2-certified; the others are HDCP certified for version 1.4. All three of the USB ports can play 4K video, assuming the content is encoded with one of the codecs that the TV can handle. Of course, the HU9000 also offers built-in  HEVC decoding to stream 4K for apps like Netflix.
Sarah Tew/CNET
As we mentioned above, the HU8550 also has a OneConnect port, which allows upgradeable connectivity in addition to whatever newfangled Smart TV nonsense Samsung dreams up in future years.

2015年3月17日星期二

Samsung JS8500 SUHD TV combines nanocrystals, flat screen

This is Samsung's HU8550, the spiritual predecessor of the JS8500. When we have an image of the JS8500, we'll replace this one.Sarah Tew/CNET
LAS VEGAS -- If you thought "Ultra HD" was the epitome of TV nomenclature hyperbole, "SUHD" is here to prove you wrong. Samsung told us the "S" doesn't stand for anything -- just a premium brand, as in the "Galaxy S" phones -- but it seems the company really means "Super."
Eschewing OLED, Samsung has instead announced three series of high-end SUHD LCD TVs for 2015, consisting of nine total models. The series detailed here, JS8500, will be the least-expensive and the only one with flat, as opposed to curved, screens. We're not big fans of curved (or overpriced) TVs, so the JS8500 is the early front-runner among the three for our favor.
So what makes them "S"? In two confusing words: quantum dots. The dots themselves are actually nanocrystals -- really, really small crystals -- applied to the blue LEDs that comprise the backlights of these LCD TVs. They emit specific wavelengths of red and green which, combined with the blue LEDs, can achieve brighter images and a wider color gamut than conventional LED-backlight technology.
Samsung says its SUHD sets achieve up to 2.5 times the light output of standard LED LCDs, although I'm guessing the high end of that number applies only to the full-array JS9500; the edge-lit JS8500 should be dimmer.
It also says their color approaches, but doesn't quite achieve 100 percent coverage of, the DCI color space, which is significantly wider than the Rec 709 color space used for almost all in-home content today (in other words the wider gamut isn't much use today, despite Samsung mentioning one-off collaborations with Fox in its press materials). Beyond the dots, SUHD TVs also employ a new panel technology designed to further improve contrast in bright rooms.
That all sounds great, and we're excited to test the SUHD TVs in the lab, especially given the excellent color we saw from Sony's Quantum Dot TV. But we still don't expect SUHD to beat the picture quality of OLED. They're still LED LCD TVs, after all, with all of the flaws of that technology.
While it does include hardware-based local dimming from its edge-lit LED backlight, the JS8500 is missing a few extras compared to Samsung's two higher-end series of SUHD sets, the JS9500 andJS9000. It lacks their full-fledged One Connect box, making due with the One Connect Mini that allows upgrades of only the connectivity, not the processing of its big brother. It also makes due with just a quad-core processor as opposed to 8 core.
Thanks in part to exclusive deals, all of Samsung's 4K UHD TVs get access to more 4K streaming video services than other brands. They include Comcast, DirecTV and M-Go. The latter requires one of Samsung's UHD video packs to allow downloads of select 4K movies. Of course they also get 4K streams from Netflix and Amazon, and offer the HEVC decoding and HDMI 2.0/HDCP 2.2 connectivity found on all major-brand 4K TVs.
The JS8500 shares with many 2015 Samsung sets an all-new Smart TV system powered by Tizen, Samsung's open-source operating system used on smart watches and a few phones. Highlights include a simpler, one-screen user interface, enhanced video sharing with Samsung phones, a Sports Live app with live games and stats on the same screen, a new Milk Video platform with clips from the web and content partners, and an alarm function that provides time, weather and other wake-up accouterments. Potentially more useful is the ability to work with PlayStation Now, providing console-free game play vis the TV itself.
In case you're wondering, Samsung didn't announce pricing on this or any of its other 2015 TVs; it typically waits until March, right before the TVs ship, to do so. For what it's worth, however, a Samsung rep told CNET informally that he expects the step-up JS9000 to sell for around the same price as the2014 HU9000, which might mean the JS8500 will be priced equivalent to the HU8550. We'll see.

Samsunug UNF5000 series review: A good picture with minimal smarts, inputs

            More than a year ago I wrote a popular article that's becoming increasingly irrelevant: "I want my dumb TV." My argument was that Smart TVs make no economic sense because you can get the same or better functionality from an add-on box for cheaper.
TVs like Samsung's UNF5000 and UNF5500 series are the reason behind its increasing irrelevance. The major difference between the two is that the F5500 has Samsung's Smart TV suite, and the F5000 does not. Currently, the price differences between the same sizes in each series are $31 (32-inch), $83 (40-inch), $51 (46-inch), and $83 (50-inch). That's not much money when add-on boxes start at $50 for the excellent Roku LT.
With its relatively cheap Smart TV suite Samsung makes it abundantly clear it wants you to get the UNF5500 instead. In case you needed extra incentive to step up, it also has a different, arguably nicer stand, and an extra HDMI input.
On the other hand, if you already own an external device for streaming -- whether a Roku or an Apple TV, a game console or a disc player -- you really don't need Smart TV. If that's the case, you'll probably be happy to note that the F5000, according to Samsung's specifications, will likely offer identical picture quality to its slightly more expensive, significantly smarter brother. That picture is pretty darn good for its class, if not quite at the level of what you see on TVs like the Panasonic E60 and Vizio E series. All told the F5000 is a solid value among dumb TVs, as long as you don't mind its sparse connectivity.
Series information:I performed a hands-on evaluation of the 40-inch Samsung UN40F5000, but this review also applies to the other screen sizes in the series. All sizes have identical specs and according to the manufacturer should provide very similar picture quality.
Models in series (details)
Samsung UN22F500022 inches
Samsung UN32F500032 inches
Samsung UN40F5000 (reviewed)40 inches
Samsung UN46F500046 inches
Samsung UN50F500050 inches
Sarah Tew/CNET
Design
Samsung's well-known minimalist design chops extend even as far down as the UNF5000 series. The frame around the screen is a uniform five-eighths-inch in width and glossy black in color, and the cabinet is nice and thin. The latter is due to the TV's edge-lit LED backlight -- making unnecessary the thicker cabinets imparted by the direct LEDs of sets like the Vizio E series and LG LA6200. The only hint of panache is the angular Samsung logo jutting forward from the bottom like a defiant chin.
Sarah Tew/CNET
One miscue is the stand, which seemed way too large chunky for our 40-inch review sample -- although its proportions might improve on other sizes. I still like it better than the four-legged spider stand found on the F5500 models, but unlike those sets, the F5000 doesn't swivel.
Sarah Tew/CNET
Another downside is the remote, but for a relatively budget-priced TV, it's not terrible. The grid of buttons lacks sufficient differentiation and suffers from clogging -- I'd rather have blank space where the "Media P." and "Sleep" buttons reside, for example -- but in its favor are full backlighting and compact size.
Key TV features
Display technologyLCDLED backlightEdge-lit
Screen finishGlossy, matteRemoteStandard
Smart TVNoInternet connectionN/A
3D technologyNo3D glasses includedN/A
Refresh rate(s)60HzDejudder (smooth) processingNo
DLNA-compliantNoUSBPhoto/Music/Video
Features
Since Samsung's Web site claims the F5000 offers "A Clear Motion Rate (CMR) of 120," we forgive you for perhaps thinking it has a 120Hz refresh rate. In fact, this is a 60Hz TV, and behaves exactly as we'd expect a 60Hz TV to behave in our tests. At least Samsung isn't alone among TV makers in creating fake specs like CMR.
As we mentioned, the F5000 lacks the extensive Smart TV suite found on the step-up UNF5500 series; the extent of its brains is that it can play back photo, music, and video files from USB thumb drives. Otherwise the two are identical aside from the F5500's stand and its third HDMI input.
Sarah Tew/CNET
Picture settings:The selection here is, not surprisingly, a bit less extensive than on higher-end Samsungs like theUNF6300 series. Gone are the 10-point grayscale and color management controls, and the fourth adjustable picture preset. Three, along with a simpler two-point grayscale, should be plenty for most users, however. There's also a control labeled LED Clear Motion that enables backlight scanning for very slightly improved motion resolution, at the expense of a dimmer image (see below).
Sarah Tew/CNET
Connectivity:Seriously, Samsung? Just two HDMI ports? If you connect a cable/satellite box and a game console to your UNF5000, there's no room for a Roku or Apple TV, a DVD/Blu-ray player, or any number of other HDMI devices.
If you want to connect more HDMI gear to this TV, a cheap switcher or an HDMI-equipped AV receiver is probably the best solution. The downside, of course, is the extra complexity of switching, a problem in turn best solved by a universal remote.