Panasonic plasma HDTVs have a well-deserved reputation for producing very dark black levels, and the TC-P55ST50 continues that trend. The 55-inch plasma panel not only delivers inky blacks, it's out of the box color accuracy is outstanding too. ?At $1,699.99 (list) it's not exactly a steal, but it's not quite as expensive as our reigning Editors' Choice plasma, last year's Samsung PN51D8000 ($2,299.99, 4 stars). The TC-P55ST50 is 3D ready, but it doesn't include glasses, which means you'll have to shell out upwards of $300 for active shutter 3D glasses for a family of four. You'll also pay more to run this set, since like many plasmas, it's not particularly energy efficient.
Editors' Note: This review is based on tests performed on the?Panasonic TC-P55ST50, the 55-inch model in the same series. Besides the screen size difference, the?$1,399.99?50-inch TC-P50ST50 is identical in features, and while we didn't perform lab tests on this specific model, we expect similar performance.
Design and Features
With the TC-P55ST50 Panasonic moves away from the glossy black bezel design used on earlier models, including the?Panasonic P50GT30 ($1,199.99, 3.5 stars) we reviewed last year. This time around the panel is framed by dark gray bezels with a slice of clear trim around the outer edge. A silver brushed aluminum base complements the cabinet and gives the set a touch of elegance. The stand does a fine job of supporting the 61-pound cabinet, but it doesn't swivel.
The 9-inch remote has 43 buttons and a four-way directional rocker with an Enter button. The main keys have red backlighting that makes them easy to identify in a dark room. The three main keys (Menu, Internet, and Viera Tools) are situated above the rocker assembly, while the number keys and player controls are at the bottom of the remote along with a Help key that launches a built-in user manual.
There's also a 3D button that lets you view 2D content in a simulated 3D mode. As I found with the Sharp Elite Pro-60X5FD, converted 3D picture quality isn't up to snuff compared with true made-for-3D image quality. You don't get the depth and clarity that true 3D offers, and there's a good deal of crosstalk. As with the P50GT30, the P55ST50 does not include active shutter 3D glasses, so be prepared to part with an additional $80 per pair.
Image settings include five preset picture modes (Standard, Cinema, Custom, Vivid, Game) and your basics: Brightness, Contrast, Color, Tint, Sharpness, and Color Temperature. Panasonic's Pro settings allow you to adjust color space and set high and low white balance for reds, greens, and blues. Other Pro settings include panel brightness and gamma adjustment.
The Audio setting menu offers Bass, Treble, Balance, and Surround settings, as well as a volume leveler to keep those pesky commercials from blasting you out of your seat. The TC-P55ST50's 8-Train speaker system, consisting of eight mini domes and a slim but powerful subwoofer, provides a solid wall of sound with a good amount of bass, but the surround effect sounds thin.
Panasonic's selection of Web apps is top notch; streaming movie channels include Vudu, Netflix, Hulu Plus, Amazon Instant video, and CinemaNow, and you get Facebook, Twitter, Skype, and YouTube. Internet Sports channels include MLB, MLS, NBA, NHL, and Fox Sports. The Viera Market Connect menu offers plenty of free services as well as pay-for apps like Uno, Apple Muncher, and Let's Golf 2. And, there's a built-in Web browser.
Performance
I tested the TC-P55ST50 using images from the DisplayMate suite of HDTV diagnostic tests, SpectraCal's CalMAN software, and a CS-200 Chroma Meter. After a basic calibration the panel produced a nice dark black level reading of 0.02 cd/m2, but it could only manage a peak brightness of 85.45 cd/m2, which is tad darker than the P50GT30 (88.58 cd/m2) and quite dim compared with the Samsung PN51D8000 (244.92 cd/m2).
Out-of-the-box color accuracy was excellent. The panel practically hit the CIE (International Commission On Illumination) chromaticity coordinates for red, green, and blue on the nose, as shown in the CalMAN-generated diagram below. More importantly, the P55ST50 delivers an excellent picture; colors popped from the solid black background in the Seasonal Forests chapter of the BBC's?Planet Earth?Blu-ray, and shadow detail was outstanding in the darker Ocean Deep chapter. What's more, there was no evidence of the fringing effect that plagued the P50GT30. Off angle viewing was typical of a good plasma panel. There was no loss of luminance from an extreme side angle and colors remained bright and true.
3D performance was good, but not on a par with our Editors' Choice high-end LCD, the Sharp Elite Pro. I noticed some crosstalk while watching clips from IMAX?Under The Sea 3D, but the artifacts were minor and didn't detract from the overall experience. Panasonic's glasses are lighter than most active shutter glasses, but aren't as comfortable as today's passive glasses, like the six pairs that come with the Editors' Choice Vizio M3D550KD ($1,429.99, 4 stars).
Plasma HDTVs aren't known for energy efficiency, and the P55ST50 is no exception. With Power Saving mode disabled, the set used 305 watts during my testing; that number dropped to 245 watts with it enabled. The P50GT30 averaged 225 watts, while the Samsung PN51D8000 used 105 watts in Standard mode. If energy efficiency is a deal breaker, consider an LED-backlit LCD model like the LG 55LM6700 ($2,299.99, 4 stars), which only consumed 67 watts.
Conclusion
The Panasonic P55ST50 is a tastefully designed 55-inch plasma HDTV that delivers very accurate colors, deep dark blacks, and wide off-angle viewing. Its $1,700 price tag is not unreasonable considering its performance, but you'll end up spending around $2000 if you need four pairs of 3D glasses. You don't get the brightness and superior image quality of the Samsung PN51D8000, but you do get a slightly bigger screen and a much smaller price tag.
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