ViewSonic LS820 uses ultra-short focus design, projection ratio of only 0.25:1, only 55 cm will be able to cast 100-inch large screen. The LS820 has a high-definition resolution of 1920×1080, and the imaging effect is more clear and sharp. At the same time with the SuperColor RGBRGB color wheel, using a special coating to take color spectrum segmentation, focus RGB, red, green, and blue, expand the visible color, in line with sRGB and Rec.709 color range, more colorful colors.
ViewSonic LS820
ViewSonic LS820 uses a stable laser light source technology, the service life of up to 20,000 hours or more, is more than a few times the ordinary projection, fundamentally eliminating the user to replace the light bulb trouble. In terms of brightness, the LS820 is equipped with 3500 lumens and a 100,000:1 contrast ratio. No matter whether it is day or night, it does not need to be specially designed for dark projection environments, but it can also show a clear and bright picture of the shoulder LCD TV.
Simple appearance and complete atmosphere configuration
In terms of appearance, the paint sleek plastic used by ViewSonic LS820 has a streamlined design as a whole. The atmosphere's black body no matter where you put it is very close to the surrounding environment. Generally speaking, for a laser TV, once installed, it does not need to be moved. Therefore, compared with ordinary projectors, the size and weight of the ViewSonic LS820 are larger, and this is also to give it a better performance.
ViewSonic LS820
ViewSonic LS820
ViewSonic LS820 fuselage control panel
ViewSonic LS820 supports vertical trapezoidal correction, keeping the screen at all four right angles, LS820 will automatically detect the vertical angle, just 3 seconds to adjust the trapezoidal distortion, at any time to ensure a perfect picture. At the same time support Blu-ray 3D format, direct connection to Blu-ray DVD, a variety of formats can automatically identify matches, just wear 3D glasses, you can enjoy large-screen 3D images.
ViewSonic LS820 Speaker Close-up
ViewSonic LS820 interface close-up
ViewSonic LS820 Side Vents
The ViewSonic LS820 is equipped with two 8W speakers. These are far from enough for home theater enthusiasts. They also need to prepare their own speakers, which will be more effective. In terms of interfaces, the interface configuration of the LS820 is complete, and all the interfaces required for daily use are available. The design of the interface is also more convenient for the front of the camera to run without affecting the overall beauty.
The menu is simple and practical for different people
As a laser television, ViewSonic LS820 has many modes for consumers to choose from in the built-in menu, which also includes many fine-tuning options for debugging, allowing users to easily adjust to their own viewing mode. In the actual measurement process by adjusting various settings, the adjustment of the screen is still quite large.
Four different color patterns contrast map
The LS820 uses the SuperColor RGBRGB color wheel, which conforms to the sRGB and Rec.709 color gamut. In the setting, there are five color modes for the user to choose, can use the habits of different consumers, at the same time by adjusting the color mode can also clearly see the overall picture color changes and changes in saturation, making the applicable crowd more widely.
Comparison of BrilliantColor's Different Values
BrilliantColor calls it extreme color technology, which, in addition to broadening the color gamut, can further improve the image quality after imaging. Colors that are more faithfully reproduced than traditional three colors give users an immersive experience. From the above comparison chart, we can see that the BrilliantColor setting in the LS820 setting is very obvious by changing the value of the picture. Increasing the BrilliantColor value improves the color and brightness of the picture.
HD real shot laser light source imaging is clear
Whether it is LCD TV or laser TV, I believe that the main purpose of each consumer is to have a good viewing effect. How about the effectiveness of the ViewSonic LS820 playing HD movies? Next, let's take a look at the picture quality of the ViewSonic LS820 when playing a movie, and see how the Optoma LCT100 renders on different styles of movie screens.
We can see from the above group of movie real shots that the contrast between the picture and the picture is very strong. In a relatively gloomy background, the details are handled in detail and the contours are distinct. The processing of the city's streetscape is also very delicate. The outline of the building and the windows have been well restored. The overall picture is very layered.
Through this group of real-time pictures of warm colors, we can see that the color of the picture is in place and the overall saturation is high. In terms of detail handling, the appearance of bones and wrinkles in human hair, trunk lines, and hand features is very clear and the image quality is high, which has met the requirements for building a home theater. Since the ViewSonic LS820 uses a laser light source, the picture presented is clearer and more accurate, which is difficult for a typical home projector.
Color contrast test screen is more vivid
Color test is one of the most important test items in the evaluation process of the projector. It mainly tests the color reproduction ability of the projector and the color saturation, lightness, color richness, and color temperature by comparing the test proofs with the color real shot diagrams. The level and so on. Here we take a look at the performance of the ViewSonic LS820 in terms of color.
The left side is the real shot of the test sample right side
The left side is the real shot of the test sample right side
The left side is the real shot of the test sample right side
Through the above three sets of comparison charts, we can easily see that the color saturation of the picture presented by ViewSonic LS820 is higher than the original picture, the color is also more vivid, and the color temperature is higher than the original picture. At the same time, many details in the original picture have also been well preserved, the screen brightness is higher than the original picture, the brightness and darkness contrast in the picture is more prominent than the original picture, the picture appears to be more transparent. The comparison chart also proves that the ViewSonic LS820 has a very wide color gamut, and its color performance is also very beautiful.
The left side is the real shot of the test sample right side
In the comparison of four-color maps, we can see that the red, green, and yellow colors are fairly good and there is no overly obvious color cast. However, the blue block appears violet and there is a clear color cast phenomenon. This is due to the blue laser wavelength problem of the laser source, resulting in the blue color of the picture is not very pure, for users who require high color accuracy Say, you also need to pay attention to this when purchasing.
Focus test focus accurate font clear
Focus test mainly through the fixed PPT test document to examine the accuracy of the projector focus, for the laser television, due to the large size of the ventilation effect is good, combined with the use of a pure glass lens in the part close to the light source, so it is not prone to heat loss The phenomenon of coke. So what about the focus of the ViewSonic LS820? Let's take a look at the performance of its real shot chart.
Overall, from the three PPT real shots above, we can see that the focus of the ViewSonic LS820 is still very satisfactory, whether it is the center of the screen characters or the characters around the four corners can be very clearly presented, There is no phenomenon of blurring and ghosting. Having such detail processing power will inevitably capture every detail of the screen during the viewing process.
Excellent brightness and color gamut for data test
Projector Data Testing We mainly use the ANSI standard developed by the American National Standards Association. This standard is also recognized as an authoritative standard in the industry. And consider the following aspects: maximum brightness, peak brightness, optimized brightness, and projector contrast color. Next, I will briefly explain a few technical terms for everyone: The first is the peak brightness, especially in the brightest mode, the highest brightness can be achieved at a single point, generally appear in the center point; maximum brightness, refers to the brightest mode The average brightness that can be achieved on the screen is higher than the reference value of this value; the optimized brightness, also known as ANSI brightness, is the average brightness of the 9 test points in the case where the projector can just distinguish eight gray scales.
Eight gray levels and 13 illumination test points
data analysis:
Brightness:
With regard to the brightness of the projector, there are three data in the table, namely the maximum brightness, the peak brightness, and the ANSI brightness. In simple terms, the maximum brightness is the average brightness of the screen in the brightest mode of the projector (brightness, contrast, and lamp mode are all adjusted to the maximum). For projectors, this data is an excellent range if it can achieve about 80% of the nominal brightness. From the results of our actual testing, the maximum brightness of the ViewSonic LS820 reached 2965 lumens, which has exceeded 80% of the nominal brightness.
Peak brightness refers to the maximum value that can be reached at a certain point on the screen in the brightest mode. In general, the peak brightness of an intelligent pico projector is best if it exceeds 80% of the nominal value or even exceeds the nominal value. From the data actually tested, the peak brightness of the ViewSonic LS820 reached 3316 lumens, which is very close to the nominal brightness.
ANSI brightness refers to the ANSI test standard, so ANSI brightness and maximum brightness are more significant for our reference. In general, the ANSI measured brightness of the projector is the best if it can reach 60% of the nominal value even beyond this range. . From the actual test data, according to ANSI test standards, the ANSI brightness of ViewSonic LS820 reached 2161 Ansi Lumens, this performance is also very good, reaching 60% of the nominal brightness, no falsification.
Contrast:
Some dark or very bright images appear in the game or when playing video. At this time, the FOFO contrast level will affect the viewing experience. From our measured data, the FOFO of the ViewSonic LS820 has a contrast ratio of 1666:1. The contrast performance is good, and the sharpness of the picture is still very high.
Color gamut:
Through the actual measurement, the color gamut of the ViewSonic LS820 reached 87.2%. This value is already higher in the projector, and the value of the color gamut of the basic conventional bulb projector is hardly exceeding 70%. The gamut advantage of the laser light source is still very obvious. . It can be seen that the ViewSonic LS820 is still up to the standard in the selling point of color upgrades.
The obvious advantages of laser television are good
Finally say two sentences:
The advantages of ViewSonic LS820:
1, the use of laser light source, brightness and life more secure
2, the measured color gamut is high, the color performance is good
3, using ultra-short focus, 0.55 meters can shoot a hundred screen
The disadvantages of ViewSonic LS820:
1. Compared with similar products on the market, there is no intelligent system
2, the audience is small, ordinary families are difficult to start
The promotion of laser television will be a major trend in the future projection market. The ViewSonic LS820 we reviewed today also allows us to see its many highlights. As a projector using a pure laser light source, the conventional bulb projector is not much stronger in terms of brightness and color performance. The actual measurement process also confirmed the vivid and vivid images brought by the wide color gamut owned by the ViewSonic LS820. At the same time, the long service life of the laser light source also guarantees the longevity of its use.
ViewSonic LS820
Although laser television has many advantages, there are still many obstacles to popularizing and expanding the market. The advantages of ViewSonic LS820 I believe we have seen the article at a glance, but due to the high cost of the resulting high prices, it is difficult for the public to accept. At the same time, compared with the same type of machine, the ViewSonic LS820 does not have an intelligent system, and it needs to be slightly inferior in operating experience and resources. But for audiophiles and people who build private home theaters, the ViewSonic LS820 is a good choice for you.
There are good hardware and display effects, of course, with a rich content resources, the combination of software and hardware can play the greatest value of a TV. In terms of content, it is recommended to install a sofa butler - the sofa butler is a third-party app store designed specifically for smart TVs, Android box users, carefully providing television, box users with high-quality TV exclusive version of the application, including with live Or on-demand video and audio and video software, various types of recreational competitive video game software and daily office entertainment management system management tools.
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