All told Samsung's LNC630 series performed well even when compared to some more-expensive LED-based models. It delivered deep black levels for a non-local-dimming LCD, sported accurate color and solid video processing, and we liked its matte screen for bright rooms (although the 55- and 60-inch sizes have glossy screens). On the other hand shadow detail was a weak spot, and of course it couldn't match the uniformity of plasma.
Prior to adjustment the LNC630's Movie mode was the best preset, but it wasn't very good. We measured an overly-blue, bright image with dark gamma, especially in near-black areas (2.5 overall versus a 2.2 target). Judicious tweaking brought the whole thing into line well, taming the grayscale quite a bit (although it was still a bit blue, especially near black) and approaching the target gamma nicely (2.27 average, albeit still too dark at the bottom). had success adjusting the color management system to improve color somewhat--although the default Auto setting is already quite accurate.
For our main image quality tests we fired up the Blu-ray of The Blind Side and slid the LNC630 in among a few of its direct competitors as well as more-expensive LED-based LCDs.
|Comparison models (details)|
|Sony KDL-46EX500||46-inch LCD|
|Vizio E470VL||47-inch LCD|
|Panasonic TC-P46S2||46-inch plasma|
|Samsung UN46C6500||46-inch edge-lit LED|
|Sony KDL-46EX700||46-inch edge-lit LED|
|Pioneer PRO-111FD (reference)||50-inch plasma|
Black level: In this crucial area the Samsung LNC630 fared well compared to others in the lineup, maintaining a similar depth of black as the Panasonic S2 in the darkest scenes, such as the black background behind the credits, and surpassing it in many darker mixed scenes, such as the near-black sky and car silhouette as the family approaches the house in Chapter 5. The LNC630 also got significantly darker than the Vizio and the Sony EX700 in these scenes, and a bit darker than the UNC6500 and the Sony EX500.
The main weakness of the LNC630, however, was its tendency to obscure details in shadows significantly. As the family picks up Michael in Chapter 5, for example, the faces of Leigh Anne and Sean appeared too shaded, and details in Sean's coat and the headrest, for example, disappeared into darkness. The LNC630 was the worst in our lineup in this regard, although the UNC6500 and EX500 were fairly close, with the others visibly more-detailed in shadows.
Color accuracy: The LNC630 performed very well in this category, outdoing the S2 and the Vizio overall and matching the UNC6500--although it was tough to pick a winner between the Samsung and Sony non-LED-based models. Skin tones, seen for example in the close-up of Leigh Anne's face as she takes Michael shopping in Chapter 6, were quite accurate, but side-by-side we noticed a very slight bluish tinge, especially in highlights. The green of the field in Chapter 12 also appeared somewhat too-pale compared to our reference or the Vizio, but again the difference was subtle, and we preferred the C630's look to the dominant green/cyan cast of the Panasonic S2.
In dark areas the LNC630 showed the same kind of bluish cast seen on many LCDs, but it was more tolerable than the green of the S2 and the significantly more extreme blue of the Vizio and the Sony EX700.
Video processing: The LNC630 series has most of the same processing options found on higher-end Samsungs, and when it comes to dejudder it offers more adjustability than the competition. Its three dejudder presets--Clear, Standard and Smooth--join a Custom setting under the Auto Motion Plus (AMP) menu. Engaging any of the three presets introduces the characteristic smoothing effect, as well as some artifacts, so we preferred the freedom of Custom. That mode, which includes both a Blur Reduction and a Judder Reduction setting, lets you tweak both parameters to your liking. We prefer minimal dejudder, but having the option to dial in as much or as little as you like is very welcome, and worked much better than we saw on LG's custom system, for example.
In the AMP menu at Custom with Judder Reduction at 0 and Blur reduction at 10, the LNC630 handles 1080p/24 sources well, without even the minor smoothing we saw on the UNC6500. Our test of "I Am Legend," using the helicopter flyover of the Intrepid from Chapter 7, exhibited the proper cadence of film and no smoothing. With AMP set to Clear or Off, the set seemed to be treating the image with 2:3 pull-down, showing the slightly stuttering cadence seen on 60Hz models (Clear looked smoother than Off, however). The other AMP settings introduced more smoothing/dejudder.
In our motion resolution tests the LNC630 scored between 600 and 700 lines--good for a 120Hz LCD--with Auto Motion Plus engaged. Turning it off dropped the result down to between 300-400 lines, and reducing the Custom Judder Reduction setting to less than 1 out the result somewhere between these two numbers. As usual with such tests, we had a difficult time detecting any real-world differences in blurring between any of the settings.
As with some previous Samsungs the LNC630 needs to be in Auto 1 film mode to pass the 1080i video deinterlacing test, for what it's worth.
Uniformity: The LNC630's standard CCFL backlight beat the edge-lit LED backlights of in our comparison at maintaining an even image across the screen. In very dark scenes we saw no trace of the amorphous brighter areas, brighter edges or banding we saw on the Samsung UNC6500. The LNC630's edges were slightly brighter than the middle, but not to the extent of the Sony KDL-EX700. We did notice a minor bright spot in the lower-left corner of the LNC630's screen however, which showed up in the black bars alongside the Theismann footage in Chapter 1, for example--the Vizio and Sony non-LED LCDs lacked any such flaw.
From off-angle the LNC630 was pretty good for an LCD, maintaining black level fidelity better than the Vizio and not introducing as much blue as the LED-based models, although it still washed out and became discolored, especially from more extreme angles in darker scenes. By way of comparison, the Panasonic S2 plasmas was essentially perfect in both off-angle performance and screen uniformity.
Bright lighting: Unlike higher-end Samsung TVs, the 40- and 46-inch sizes of the LNC630 have a matte screen, which serves well in bright rooms where lights, windows, and bright objects cause reflections. Such objects appeared dimmer and much less distinct, and thus less distracting, than they did on the glossy UNC6500, for example. The LNC630 also trounced the lowly Panasonic S2 at maintaining black-level fidelity under the lights. Overall it turned in the same very good performance as the similarly matte Sonys and Vizio in this category. Since we didn't test the glossy-screened 55- and 60-inch models, we can't directly report on their performance, but we assume they'll exhibit the same kind of bright-room performance we saw on other glossy-screened Samsungs, like the UNC6500 (see that review for details).
Standard-definition: With standard-def sources the LNC630 performed well. It delivered every line of the DVD format and details were relatively sharp. Jaggies in moving lines were kept to a minimum, and noise reduction functioned well, including the Auto settings. In Auto 1 and Auto 2 film modes the set engaged 2:3 pull-down effectively.
PC: The Samsung LNC630 aced our PC tests, as expected from an LCD TV. It delivered every line of 1,020x1,080 resolution via both VGA and HDMI, with sharp text and minimal edge enhancement.
|Before color temp (20/80)||7560/7212||Poor|
|After color temp||6570/6589||Good|
|Before grayscale variation||1052||Poor|
|After grayscale variation||116||Average|
|Color of red (x/y)||0.6331/0.3236||Good|
|Color of green||0.2937/0.5857||Good|
|Color of blue||0.1488/0.0522||Good|
|Defeatable edge enhancement||Y||Good|
|480i 2:3 pull-down, 24 fps||Pass||Good|
|1080i video resolution||Pass||Good|
|1080i film resolution||Pass||Good|
Power consumption: We did not test the power consumption of this size in the LNC630 series, but we did test the 46-inch model. For more information, refer to the review of the LN46C630.