If you talk about the development of projectors in recent years, there seems to be a basket of things to say: size reduction, entry of intelligent systems, price of people close to people, etc. But if from the user's point of view, the deepest experience is undoubtedly projection' The quality of the picture has been greatly improved.
This change stems from the rapid jump in projection technology, including the advancement of light sources, the development of built-in chips, the gamut standardization and various innovations. But nowadays, the projectors are becoming more 'home appliances', and today, a wide range of users are still on the picture quality. The purchase standard indicates confusion. This article takes the BenQ i705 as an example, and the knowledge of the science quality part.
Brightness: The primary standard for projection products
Light, is the first element of creating images. In the dim picture, color, contrast, and sharpness lose their meaning. Compared to the diode self-illumination of TV products, the projector needs to project the light source to another imaging surface to form Diffuse reflection. Reflective light source has a much milder effect on the eye than direct light source, but the brightness loss is predictable, so the quality of the light source brightness is particularly important.
There are three types of projection light sources commonly used in the market, such as light bulbs, LEDs and lasers. The bulb light source is used in most professional home projections. The advantage is that the brightness is high. For example, the brightness of the BenQ i705 reaches 2200 ANSI lumens, which is suitable for viewing in the living room environment. Because the bulb generates a large amount of heat and the heat of the outlet is high, most people think that the life of the bulb is shorter than that of the LED or the laser, but the service life of more than 5,000 hours is enough to cope with the daily use of ordinary households.
Bright living room environment, i705 real shot
Most of the LED light source is applied to micro-injection. The advantage is that it has almost no heat, which reduces the size of the heat-dissipating module, making the product itself easy to carry and its service life is longer. However, the brightness produced is generally around 1000 lumens, which is suitable for comparison. Dark viewing environment.
Laser is an emerging light source in recent years. The advantage is that it has high brightness and can reach a wide color gamut. However, since the cost has not been pressed down, the popularity is not high.
As a projector for home use, after using consumer feedback and laboratory data, 1500-2000 ANSI lumens is the applicable brightness range for balancing brightness and color, so you need to pay attention to the distinction between light source and brightness when purchasing a projector. Value (lumen).
Color: The premise of sensory pleasure
Whether the color is accurate or not is a necessary factor to measure the picture quality. In the test of the projection equipment, the Rec.709 international standard color gamut is commonly used, which is the international standard for the use of HDTV, and is also the release of Blu-ray discs in the theater movie. Universal color gamut standard.
In fact, BenQ has a profound technical background in color. The color laboratory set up in Taipei and the color adjustment team led by THX and ISF dual-certification engineers have all raised the color performance of BenQ projections to international standards.
In particular, BenQ's CinematicColor color adjustment technology strictly follows the Rec.709 color gamut for adjustment. The BenQ i705 also has this technology blessing, which ultimately presents accurate and true colors.
I705 real shot
Resolution: True HD or fake HD
At present, 1080P is a popular resolution in the projection field. However, many products that are also marked with 1080P HD resolution can be sold to more than 2,000 yuan. What is the difference?
The same as 1080P resolution, the advantage of the i705 is that it uses a 0.65-inch large chip from Texas Instruments. Its original resolution is 1080P. Compared with the lower price of 0.47DMD, the innate quality performance is better. The light reflectance is higher, and the color contrast performance under high brightness is exceptionally excellent.
I705 real shot
The factors affecting the image quality actually include contrast, lens material and the like, but brightness, color and resolution are undoubtedly three important factors that are very important and convenient to compare. As a display device for large screen enjoyment, the quality of the projector is greatly It affects the sensory pleasure of the user when using it, so you need to pay more attention when purchasing.
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