CNET评测3D PDP：三星PN50C7000和松下P50VT25

draja

Four 3D TVs compared

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David Katzmaier June 30, 2010 (updated on: July 19, 2010)
Whether they feature soccer balls, meatballs, or planetary nebulae popping out of the screen, advertisements for 3D TVs are everywhere. At CNET we got the chance to review and directly compare four of the highest-end models from the three major manufacturers, and between ducking for cover and swapping incompatible 3D eyewear, we managed to come up with some impressions.
In terms of 3D performance, the two plasmas, the Panasonic VT25 and the Samsung PNC7000, essentially tied for best of the bunch. Their 3D presentations evinced the least "crosstalk" (the ghostly doubled lines around 3D objects onscreen). Between the two we noticed a couple color-related issues on the Panasonic we didn't see on the Samsung, but they're nitpicks and balanced by the Panasonic's superior black levels--which make it the best TV overall when we consider 2D performance.
Among the two LCDs the Sony HX909 came in behind the plasmas but still evinced with less crosstalk overall than the Samsung UNC8000, although unlike the Samsung, the Sony's crosstalk worsened when the image was seen from off-angle. The Sony also showed minor flicker in some scenes. We liked the Sony's glasses best of the four from a comfort standpoint, and they shut out peripheral vision better than the others.
All of these 3D TV caused some mild disorientation when we first donned the glasses, which tended to disappear after a few moments with good 3D content. Sony and Samsung have 2D-to-3D conversion engines, as well, and when we tried those, our disorientation escalated to nausea at times, especially when we dialed up the 3D effect.
Speaking of content, our favorite of the four 3D Blu-ray discs available so far is "Coraline" (exclusive to Panasonic) by a long shot. It uses stop-action animation, filmed with actual cameras, whereas the others, namely "Monsters vs. Aliens (exclusive to Samsung), "Ice Age: Dawn of the Dinosaurs" (Panasonic again), and "Cloudy with a Chance of "Meatballs" (the only one that's not an exclusive), are all computer-animated.
We didn't include DirecTV's 3D presentation of World Cup Soccer on ESPN in our initial evaluations, but we've seen it since, and though softer than Blu-ray it certainly provides a convincing 3D effect. The same goes for the All-Star Game and Home Run Derby, although some other 3D content was worse.
On all of these TVs, the stereoscopic 3D effect, with its impressive sense of depth, is undeniable and unlike anything we've seen on TV before. When Coraline crawls into the tunnel connecting the real and the dream worlds, for example, the edges leap into the foreground while the end of the hole recedes into the depths of the image. Watching a film in 3D on these TVs provides a "wow" factor similar to what we saw in the theater, aside from the difference in screen size. Even with all of its issues, system requirements, and caveats, we're looking forward to seeing more 3D TV.
Check out the individual reviews below for more information on both 2D and 3D picture quality, and see our 3D FAQ for the basics.

Product name	Panasonic Viera TC-P50VT25	Samsung PN50C7000	Sony Bravia XBR-52HX909	Samsung UN55C8000
Price	$1,879.00 to $2,599.98	$1,295.00 to $1,999.99	$2,784.00 to $3,599.99	$2,293.00 to $3,499.99
CNET editors' rating	4.0 stars Overall score: 8.7 (4.0 stars)	4.0 stars Overall score: 8.0 (4.0 stars)	3.5 stars Overall score: 7.9 (3.5 stars)	3.5 stars Overall score: 7.6 (3.5 stars)
Average user rating	4.5 stars	3.0 stars		3.0 stars
Release date	May 15, 2010	April 15, 2010	July 15, 2010	April 01, 2010
The Bottom Line	With both 2D and 3D sources, Panasonic's flagship TC-PVT20/25 series plasma TV delivers outstanding overall picture quality.	Among the better 2D performers available, the Samsung PNC7000 series plasma also delivers 3D for less than the competition.	Although its black levels challenge the best ever, some other picture-related aspects of the Sony XBR-HX909 series don't live up to the high price.	Its 3D is still a work in progress and its 2D picture quality comes up short of the best available, but the high-end Samsung UNC8000 series still offers superb features, solid performance, and unique style.
Similar Products	[url=]Compare more products[/url]	[url=]Compare more products[/url]	[url=]Compare more products[/url]	[url=]Compare more products[/url]
Features
3D Technology	Info unavailable	Yes	Yes	Yes
Motion Enhancement Technology	Info unavailable	600Hz sub-field driving	240Hz	240Hz
Sound Output Mode	Stereo	Stereo	Info unavailable	Stereo
Product Description	50 in	Samsung PN50C7000 - 50 in Plasma TV	52 in	Samsung UN55C8000 - 55 in LCD TV
DVD	None	None	Info unavailable	None
VCR	None	None	Info unavailable	None
Technology	Plasma (PDP)	Plasma (PDP)	LED-LCD	LED-LCD
Diagonal Size	50 in	50 in - Widescreen	52 in	55 in - Widescreen
Enhanced Refresh Rate	Info unavailable	600 Hz	240Hz	240Hz
Additional Features	3D compatible Pro setting user menu 96 Hz refresh rate Pre-discharge control technology	3D compatible	3D compatible	Ultra clear panel LightSensor technology Swivel stand
Display Format	Info unavailable	1080p	1080p	1080p
Full specifications	Full specifications	Full specifications	Full specifications	Full specifications
Buying choices	Best Buy $2,599.98 In stock: See Site Amazon.com Marketplace $2,359.00 In stock: Yes JustBuyElectronics $1,960.00 In stock: Yes Prices from 4 CNET Certified stores	Dell Small Business $1,699.99 In stock: Yes TigerDirect.com $1,699.99 In stock: Yes B&H Photo-Video $1,599.00 In stock: Yes Prices from 13 CNET Certified stores	B&H Photo-Video $3,599.00 In stock: Yes TigerDirect.com $3,599.99 In stock: Yes Crutchfield $3,599.10 In stock: Yes Prices from 13 CNET Certified stores	Best Buy $2,899.99 In stock: See Site Amazon.com $3,499.99 In stock: Yes Crutchfield $2,899.10 In stock: Yes Prices from 8 CNET Certified stores

draja

CNET editors' review [url=]Expand full review[/url]

• Reviewed by:David Katzmaier
• Reviewed on: 07/14/2010
• Updated on: 08/16/2010
• Released on: 04/15/2010

• CNET editors' rating [url=]4.0 stars[/url]
  Overall score: 8.0 (4.0 stars)
  
  
• Design: 8.0 8.0/10
• Features: 8.0 8.0/10
• Performance: 8.0 8.0/10
• Editors' rating explained

• CNET energy rating:
  • Power-on wattage: 255.76 Watt
  • Stand-by wattage: 0.08 Watt
  • Annual cost: 77.69 US Dollars
  
  More about this
  

The good: Excellent black-level performance; accurate color overall; numerous picture controls and tweaks; sleek styling with inch-deep panel; superb streaming and widget content via well-integrated Apps platform; solid 3D picture quality.
The bad: Cannot properly handle 1080p/24 sources; less efficient than LCD models; duplication of Apps and widgets can be confusing; does not include 3D glasses.
The bottom line: Among the better 2D performers available, the Samsung PNC7000 series plasma also delivers 3D for less than the competition.
Review: As the least expensive plasma TV for 2010 to feature 3D compatibility, the Samsung PNC7000 series will strike a chord of interest with those who care both about the picture-quality advantages of plasma over LCD--such as improved uniformity and off-angle viewing--and about that much-hyped third dimension. And judging from the four 3D models we've reviewed, plasma provides a significant advantage over LCD for 3D picture quality too. That said, the excellent overall 2D image on the Samsung PNC7000 series is what matters most to us, despite a few niggles that keep it from the very top of the class. ... [url=]Expand full review[/url]

As the least expensive plasma TV for 2010 to feature 3D compatibility, the Samsung PNC7000 series will strike a chord of interest with those who care both about the picture-quality advantages of plasma over LCD--such as improved uniformity and off-angle viewing--and about that much-hyped third dimension. And judging from the four 3D models we've reviewed, plasma provides a significant advantage over LCD for 3D picture quality too. That said, the excellent overall 2D image on the Samsung PNC7000 series is what matters most to us, despite a few niggles that keep it from the very top of the class. A comprehensive feature set and slick, slim styling sweeten the deal even further, making the PNC7000 one of the most impressive plasmas we've seen so far.
Editors' note, August 12, 2010: This review has been updated to reflect testing of Hulu Plus. Also, earlier PNC7000 series TVs apparently showed dejudder processing, aka "soap opera effect," that was not present in the sample we reviewed. Samsung has issued a firmware update to correct the problem. For a link to the update and a full explanation of the dejudder issue, which was also cited in some CNET user opinions, click here.
Series information: We performed a hands-on evaluation of the 50-inch Samsung PN50C7000, 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 PN50C7000 (reviewed)	50 inches
Samsung PN58C7000	58 inches
Samsung PN63C7000	63 inches

Design

At 1.4 inches deep, this plasma looks more like an LED-based LCD from the side.

Design highlights
Panel depth	1.4 inches		Bezel width	2 inches
Single-plane face	No		Swivel stand	Yes
Other: Textured matte bezel; transparent edge and stand stalk; brushed metal stand top

Photo gallery:
Samsung PNC7000 series

The clean, classic look of the PNC7000 series is one of our favorites among plasma TVs this year. We especially like the matte finish of the dark gray bezel, with its subtle metal-like texture to match the actual brushed metal of the stand. Samsung's signature transparent stalk and frame edge heighten the appeal, and if you care, the panel is thin enough at 1.4 inches to cause guests to mistake it for an LED-based LCD.

A transparent edge and matte finish distinguish the PNC7000's frame.

Remote control and menus
Remote size (LxW)	8.4 x 2 inches		Remote screen	N/A
Total keys	49		Backlit keys	44
Other IR devices controlled	No		RF control of TV	No
Shortcut menu	Yes		Onscreen explanations	Yes

The remote included with the PNC7000, while similar in size, shape and button count to the one offered on step-up sets like the UNC8000, has one huge advantage. Instead of catering to slick looks with impossible-to-use, flush semi-keys, the C7000's clicker has standard, raised buttons. We don't like the new grid layout as much as the better-differentiated cursor keys on last year's remotes, but at least that fingerprint-magnet finish is gone.
Samsung didn't change its basic TV control menus from last year, and that's a good thing. The transparent, blue-highlighted graphics are easy to read and navigate, and response is snappier than last year. Text explanations are present for just about every function.

We're still fans of Samsung's main menu design.

Features

Key TV features
Display technology	plasma		LED backlight	N/A
3D compatible	Yes		3D glasses included	No
Screen finish	Glass		Refresh rate(s)	60Hz
Dejudder (smooth) processing	No		1080p/24 compatible	No
Internet connection	Yes		Wireless HDMI/AV connection	No
Other: Built-in 2D-to-3D conversion system; Optional 3D Starter kit (SSG-P2100T, $350); 3D glasses (SG-2100AB; $150/pair); Wi-fi USB adapter (WIS09ABGN, $80)

The Samsung PN50C7000 lacks the 3D glasses included on the Panasonic TC-PVT20/25 series, but on the other hand offers a system that converts 2D content to 3D (Panasonic does not). At press time Samsung's starter kit, with two sets of specs and a 3D Blu-ray of "Monsters vs. Aliens," is free if you buy a Samsung 3D Blu-ray player along with your TV. The PNC7000 lacks the Cinema Smooth option found on the PNC590 and the step-up PNC8000 series, so it doesn't properly reproduce 1080p/24 cadence. We'd like to see built-in Wi-Fi, but other plasmas require a dongle for wireless Internet access, too.

Samsung offers a few 3D options in the menu.

Streaming media
Netflix	Yes		YouTube	Yes
Amazon Video on Demand	Yes		Rhapsody	No
Vudu video	Yes		Pandora	Yes
CinemaNow	Yes		DLNA compliant	Photo/Music/Video
Blockbuster	Yes		USB	Photo/Music/Video
Other: Hulu Plus, Dailymotion

The selection here is the best available on any TV today. With the addition of Hulu Plus Samsung has leapt ahead of the competition for now, although we expect other TV makers to add Hulu's subscription service soon enough. Dailymotion, CinemaNow and Blockbuster are not found on other TVs. No major video services go missing, although we'd like to see more audio support beyond Pandora (like Slacker radio or Last.fm). With the exception of Amazon VOD, which takes the form of a Yahoo widget, all of the streaming services are integrated into Samsung's main Apps platform (see below).
In brief testing we had no problems with Netflix, Amazon, Vudu, or YouTube. Video quality was par for the course, and we appreciated that picture settings, including custom dejudder, were available for streaming video--although 2D-to-3D conversion was not. We did not test streaming of music, photos, or video via USB or DLNA.

Hulu Plus headlines an excellent selection of streaming Apps.

However, we did check out Hulu Plus and came away with mostly positive impressions. Its video quality was very good to excellent overall, depending on the source. Its navigation was snappy, and we liked the built-in search (aside from the tedium of entering terms using the TV's remote) and the app's general interface.
The one big problem we had with Hulu Plus was its lack of picture control. On Netflix, Amazon, and Vudu, we were able to adjust basic picture parameters and choose from among picture modes. With Hulu Plus, no picture adjustment options were available and the image appeared stuck in the default Dynamic mode--otherwise known as Torch Mode, with overly bright highlights and oversaturated, inaccurate colors. The non-defeatable dejudder processing afflicting earlier PNC7000 models (see Editors' note) would likely also be present, but it our updated review sample it was thankfully absent. We assume Samsung will update the app to include some picture controls in the future, but as it stands we prefer to get Hulu Plus from an external source (like the Blu-ray player), where picture controls remain an option.
Check out our hands-on impressions of Hulu Plus on the Samsung CD-C6900 Blu-ray player for more information.

Internet apps
Yahoo widgets	Yes		Skype	No
Vudu apps	No		Weather	Yes
Facebook	Yes		News	Yes
Twitter	Yes		Sports	Yes
Photos	Picasa/Flickr		Stocks	Yes
Other: Includes Google Maps, Samsung TV support videos, Getty images and more

Samsung wants you to think of its Apps platform much like a certain other Apps store from Apple. The TV version from Samsung is a far cry from the iPhone version today, but does offer more options than similar services on other brands' TVs. Since the service debuted earlier this year it has added Facebook, Google Maps and videos with product support and info on Samsung products. On the other hand the lame games are (thankfully) gone.
In addition to Apps within the main interface, there's a separate Yahoo widgets interface with 19 total add-ons available at press time. They include weather, news, sports and the like, along with meatier widgets like Amazon Video-on-Demand, Drivecast, Flickr and, yes, Facebook. The widget experience is much, much better than in the past, owing to faster load and response times. Now the widget taskbar comes up almost immediately, and navigating between widgets and within a widget itself is a breeze.
On the other hand we'd prefer to see one integrated interface, such as the one Vizio offers, for all interactive functions. For both Facebook and Twitter, for example, the TV has both an App by Samsung and a Yahoo widget. Both interfaces offer news, weather and even photo services (Picasa for Apps, Flickr for widgets). With all that content, juggling two interface options can become confusing.
Both Apps and widgets have profiles and universal sign-in features, which makes them easier to use. An option to input searches, passwords and other text with something other than the unwieldy onscreen keyboard would help a lot, however.

Samsung whipped up its own Facebook app to go with the existing Yahoo widget. For some reason, the TV offers both.

Picture settings
Adjustable picture modes	4		Independent memories per input	Yes
Dejudder presets	0		Fine dejudder control	N/A
Aspect ratio modes -- HD	4		Aspect ratio modes -- SD	4
Color temperature presets	4		Fine color temperature control	10 points
Gamma presets	7		Color management system	Yes
Other: Numerous 3D controls; new 10-point color temperature system; RGB filters and built-in test patterns

Samsung has officially retaken the picture settings crown from LG this year, at least on higher-end models like the PNC7000. Highlights for tweakers include a new 10-point system--it works better than what we saw on LG's PK750 plasma, but still has a couple of issues--in addition to internal test patterns and red, green, and blue color filters, all to help would-be calibrators. For some reason Samsung has also changed the name of one of its picture modes from Natural to Relax, but as usual only the Movie mode allows the full panoply of adjustments.
Samsung offers a smattering of settings for both native 3D content and 2D-to-3D conversion. With the former you can fool around with "3D viewpoint," said to adjust perspective, while the latter provides a "depth" setting that gives a similar adjustment option. On the other hand the C7000 lacks the 3D Optimize option found on the UNC8000 LCD. It's also worth noting that engaging 3D changes to a separate set of picture settings, and removes some of the options available in 2D mode (like Eco settings, aspect ratio adjustments, and more).

[ 本帖最后由 draja 于 2010-9-13 14:04 编辑 ]

draja

CNET editors' review [url=]Expand full review[/url]

• Reviewed by:David Katzmaier
• Reviewed on: 06/16/2010
• Updated on: 08/19/2010
• Released on: 05/15/2010

• CNET editors' rating [url=]4.0 stars[/url]
  Overall score: 8.7 (4.0 stars)
  
  
• Design: 8.0 8.0/10
• Features: 9.0 9.0/10
• Performance: 9.0 9.0/10
• Editors' rating explained

• CNET energy rating:
  • Power-on wattage: 275.08 Watt
  • Stand-by wattage: 0.14 Watt
  • Annual cost: 60.41 US Dollars
  
  More about this
  

The good: Superior black-level performance and excellent shadow detail; accurate primary colors in THX mode; great color saturation; effective antireflective screen; reproduces 1080p/24 cadence properly; VieraCast provides access to select Internet services and improved customization; solid 3D picture quality; includes 3D glasses.
The bad: Relatively expensive; last year's Panasonic plasmas lost black-level performance over relatively short periods of time; nonadjustable grayscale in THX mode; some artifacts in 1080p/24 mode; fewer streaming services and apps than the competition; uses more power than LCDs and newer plasmas.
The bottom line: With both 2D and 3D sources, Panasonic's flagship TC-PVT20/25 series plasma TV delivers outstanding overall picture quality.
Review: There's plenty of hype surrounding 3D TV, much of it promulgated by the people at Panasonic, but the main reasons we like the TC-PVT20/25 series so much are contained by the traditional two dimensions. Yes, it beats the one other first-generation 3D-compatible TV we've tested, and yes, it actually includes 3D glasses, but with the scarcity of 3D content available today, the need to buy additional, expensive glasses for every family member, and the basic fact that 3D TV isn't for everyone, we think this TV's 2D prowess is the main reason to buy it. ... [url=]Expand full review[/url]

There's plenty of hype surrounding 3D TV, much of it promulgated by the people at Panasonic, but the main reasons we like the TC-PVT20/25 series so much are contained by the traditional two dimensions. Yes, it beats the one other first-generation 3D-compatible TV we've tested, and yes, it actually includes 3D glasses, but with the scarcity of 3D content available today, the need to buy additional, expensive glasses for every family member, and the basic fact that 3D TV isn't for everyone, we think this TV's 2D prowess is the main reason to buy it.
Of course, there are plenty of reasons not to as well, chief being the company's black-level loss issue with 2009 models. Until the results of our long-term test of the VT25 are in we can't speak definitively to that, but in the meantime nay-sayers could also point to its hungry power use, some issues with 1080p/24 playback or the imperfection of its grayscale. But weighed against its excellent general color accuracy in THX, its improved antireflective screen and especially those inky black levels, the knocks against the initial 2D picture quality of the Panasonic TC-PVT20/25 series seem minor. Standard exceptions aside, it's the best 2D TV we've ever tested, although we'll reserve final judgment until we can examine the competitors' best 2010 HDTVs.
Editors' note, August 19, 2010: After about 920 hours, which at the average rate of 5.2 hours of on-time per day works out to about 177 days of average life, the black level performance of our TC-P50VT25 review sample has not changed. Our long-term test of Panasonic's 2010 plasma TVs will continue throughout the year, and any changes will be reported here.
Series information: We performed a hands-on evaluation of the 50-inch Panasonic TC-P50VT25, but this review also applies to the other screen sizes in the series. All models in the series have identical specs and according to the manufacturer should provide very similar picture quality. The same goes for the 50-inch TC-P50VT20, a 50-inch model exclusive to Best Buy. Aside from its bezel color and the fact that it lacks an RS-232 connection, it is the same as the others listed below.

Models in series (details)
Panasonic TC-P50VT25 (reviewed)	50 inches
Panasonic TC-P54VT25	54 inches
Panasonic TC-P58VT25	58 inches
Panasonic TC-P65VT25	65 inches
Panasonic TC-P50VT20	50 inches

Design

A subtly different bezel color separates the TC-PVT25's styling from the pack.

Design highlights
Panel depth	3.6 inches		Bezel width	2.4 inches
Single-plane face	No		Swivel stand	Yes

Photo gallery:
Panasonic TC-PVT20/25 series

Externally there's no extra dimension of panache to the TC-PVT25's appearance, unless you count the glossy, dark, grayish-bronze bezel color--glossy black is the HDTV norm--or the silver accent strips that border the top and bottom edges of the panel. The lower one tapers at the sides and separates the main area of the frame from the black-colored, gentle curve along the bottom edge. Panasonic continues the staid-yet-subtly-high-end look with the matching oval stand, complete with its own silver border. All told we really like the TV's appearance, which separates it from the pack without being too garish. Note that the TV-P50VT20 (not pictured) has a brighter, "simulated stainless steel" frame instead of the VT25's bronze.

The matching, silver-edged stand allows some swivel.

Remote control and menus
Remote size (LxW)	9 x 2 inches		Remote screen	N/A
Total keys	50		Backlit keys	36
Other IR devices controlled	No		RF control of TV	No
Shortcut menu	Yes		On-screen explanations	Yes

The company uses an improved clicker compared with 2009's, with more backlit keys and a larger "Menu" button, and we appreciate the well-differentiated layout. Its only downside in our view is an incapability to control other gear directly via infrared. The company has updated its blue-and-yellow menus to include onscreen explanations and a persistent navigation column of icons on the left, and as a result they feel more modern and are easier to use than last year, if not quite up to the level of Sony or Samsung.
Features

Key TV features
Display technology	plasma		LED backlight	N/A
3D compatible	Yes		3D glasses included	Yes
Screen finish	Glass		Refresh rate(s)	48Hz, 60Hz, 96Hz
Dejudder (smooth) processing	No		1080p/24 compatible	Yes
Internet connection	Yes		Wireless HDMI/AV connection	No
Other: Includes one pair of 3D glasses (TY-EW3D10; $150 each per additional pair); Optional Wi-Fi dongle (DY-WL10, $99); Optional network camera (wired BL-C210, $199; wi-fi BL-C230, $299)

Unlike the 3D TVs released so far by Samsung, the TC-PVT20/25 includes the necessary glasses which, like all first-generation glasses, will not work with other brands' 3D TVs. The Panasonic lacks a 2D-to-3D upconversion system found on 3D models from Samsung, Sony, and Toshiba--although given the issues we experienced with Samsung's system, we don't miss this feature much.
Panasonic says its flagship plasma incorporates all sorts of image-quality enhancements, including short-throw phosphors designed with 3D in mind that also improve motion resolution and phosphor lag with 2D--although, as far as we're concerned, those areas didn't really need any improvement. More importantly, the VT20/25 models include a 96Hz refresh rate, which allows the TV to properly handle 1080p/24 content--something the step-down Panasonics cannot. See Performance for details.
Options include the same kind of proprietary Wi-Fi dongle used by Samsung and LG; naturally we'd like to see built-in Wi-Fi (a la Vizio and higher-end Sony sets), but, again, we're not surprised at its omission. We're also intrigued by the optional networked camera, which provides VT25 owners with relatively cheap in-home monitoring capability. We didn't test either option for this review.

Panasonic includes one pair of 3D glasses with the TC-PVT20/25.

Streaming media
Netflix	Yes (July 2010)		YouTube	Yes
Amazon Video on Demand	Yes		Rhapsody	No
Vudu video	No		Pandora	Yes
CinemaNow	No		DLNA compliant	No
Blockbuster	No		USB	Photo/Music/Video

Just about every TV maker has Netflix, and when Panasonic turns on this feature in July it will join the ranks of "good enough" streaming. We'd still like to see the excellent picture quality of Vudu's HD service, found on many other makers' TVs, available too, but Amazon VOD has solid high-def picture quality in its own right. DLNA won't be missed by most buyers, and it's nice to see Pandora onboard to handle audio duties.

VieraCast's streaming selection will be up to 2010 snuff once Netflix arrives in July.

Internet apps
Yahoo widgets	No		Skype	Yes
Vudu apps	No		Weather	Yes
Facebook	No		News	No
Twitter	Yes		Sports	Yes
Photos	Picasa		Stocks	Yes
Other:Customizable VieraCast home page; two German-language news widgets; Skype requires speakerphone accessory (TY-CC10, $169); compatible with USB PC keyboards

Panasonic's VieraCast system got a facelift for 2010, adding widgets like Fox Sports and Twitter ("coming soon" as of press time), as well as a Skype option. Our favorite change is that the home page can be customized somewhat, allowing you to place the apps and streaming services you want on the first, second, or third page in any of seven slots arranged around the central picture window. Most other TVs' Internet service interfaces, aside from Vizio and Yahoo widgets, don't let you rearrange content to the same extent.
VieraCast still seems a bit archaic compared with the others, takes over rather than overlays whatever you're watching, and inexplicably lacks a nonbusiness (and non-German) News component, but we do appreciate the well-integrated feel, relatively snappy response time, and the above-average functionality of the custom apps, namely Bloomberg and Weather.
We also like the option of using a USB keyboard, although a couple of older wireless ones we tried (a Logitech MX3200 and a Microsoft Wireless Entertainment Keyboard 7000) didn't interface with the TV. Many other wired or wireless USB keyboards should work, however, and Panasonic told us "Logitech MK700, DiNovo, Logicool, or Microsoft keyboards work well."

The interface lets you re-arrange and add or remove any of the apps or streaming services.

Picture settings
Adjustable picture modes	5		Independent memories per input	Yes
Dejudder presets	0		Fine dejudder control	N/A
Aspect ratio modes -- HD	5		Aspect ratio modes -- SD	4
Color temperature presets	5		Fine color temperature control	4 point
Gamma presets	6		Color management system	Yes
Other: THX mode is adjustable; On/Off "Blur reduction" setting; very basic 3D settings

Panasonic has equipped the TC-PVT20/25 series with an array of picture settings on a par with other makers' TVs, if not quite to the level seen on LG and Samsung's high-end models. The Pro Settings menu, available only in the Custom picture mode, offers niceties like a fine color temperature menu (a measly four points is still better than none), an array of gamma choices, and, unlike on the G20/25 models, a color management system (although it wasn't effective at correcting the color errors in Custom mode). We also like that, unlike on LG's so-equipped TVs, Panasonic's THX mode can be adjusted.
The new-for-2010 "blur reduction" setting affects motion resolution, but (happily) doesn't introduce any dejudder processing. Unlike the Samsung UNC8000 series, which offers an array of tweaks to 3D, the VT25's sole nonessential adjustments are a provision for swapping the right and left eyes, and a simple On/Off diagonal line filter, described as something you "Select when diagonal lines appear jagged" and "Turn off when the picture looks noisy." We never found the need to use it during 3D viewing.

There's not much customization available in the 3D settings menu.

Other features
Power saver mode	No		Ambient light sensor	Yes
Picture-in-picture	No		On-screen user manual	No
Other: Two modes to combat burn-in

Watchers paranoid about burn-in (we aren't) will appreciate the scrolling bar designed to erase it, and the pixel orbiter intended to prevent it in the first place. We'd like to see a brightness-limiting energy saver mode, as well as an onscreen companion to the thick paper manual.

You can adjust the pixel orbiter or engage a scrolling bar to deal with burn-in, aka "temporary image retention."

Connectivity
HDMI inputs	3 back, 1 side		Component video inputs	2 back
Composite video input(s)	1 back, 1 side		S-video input(s)	0
VGA-style PC input(s)	1		RF input(s)	1
AV output(s)	0		Digital audio output	Optical
USB port	2 side		Ethernet (LAN) port	Yes
Other: Side SD card slot; RS-232 port (VT25 models only)

枪手脑残

虽然能看懂

但是看的累

        LZ给个明话吧~~~

draja

从多个国外媒体评测看，不管是哪个高哪个低，差别都不是很大，属于同一级别，但看价格，松下是远高于三星的，再对比国内价格，松下又远高于国外价格，三星则和国外价格相近

我的结论是三星的性价比更高，如果认为CNET综合性能差0.7（总分10分）的价值那个差价，可以选VT20，认为不值那个差价，就选C7000

枪手脑残

既然自发光无敌
那么同为高端的自发光机器，应该相差不大

  三星有液晶撑着，价格战打的起？？

wodeai623

[s:97] 讨厌棒子的东西

wodeai623

始终觉得韩国人是一群伪男人

didiao2

原帖由 wodeai623 于 2010-9-13 16:33 发表
始终觉得韩国人是一群伪男人

你要么说点有用的东西，要么就别在这讲些没用的风凉话，就算你想表达对棒子的不满也请专业一点，可以吗？

hzx33

虽然都是四星，但是松下总分是8.7分，三星总分是8.0分！！！

hxd888

看不懂

passarella

就是说，多10%

qwertyuiop【】

三星有嗡嗡叫的毛病吧[s:97]

LBISDN2

[s:15] [s:15]

GTO

有意思的对比

从性价比来看,松下的性价比实在太差了,足足贵了一半.