The rather high price of the projector implies its careful choice. 30-60 thousand rubles is exactly the amount that you need to focus on. This material will help you answer the question: how to choose a projector and understand the nuances and important points of this choice.
As mentioned above, the rather high price for a projector is primarily due to its design. First of all, when choosing any digital device, you must decide what you need it for? The same should be done for a projector, because a projector for presentations and a projector for watching movies at home are completely different things.
Take, for example, a projector for presentations. Since it will often travel with you to various events, its compactness, weight and brightness come out in the first place. The situation and requirements are different for home projectors, since they require quiet operation and high image quality.
Consider the basic principles of the projector
CTR projectors
Three kinescopes form a common image with the help of a lens combined on the screen. Such projectors are characteristically bulky, heavy (the weight can reach several tens of kilograms) and are not mobile, therefore they are not suitable for serving presentations. In addition, setting up such devices is complex and requires the help of a specialist. The positive side of CTR projectors is image quality. Accurate color reproduction and rich tones, no noise or pixelation. All these pluses make it a great projector for watching movies in your home.
It is impossible not to note the high price that will have to be paid for such a projector, so the vast majority of buyers are immediately eliminated.
LCD projectors
The principle of constructing an image is as follows: the light passing through the liquid crystal matrix hits the screen. This physics of work allows you to produce fairly compact models with good brightness. Of the serious drawbacks, it is worth noting the noise of the fan cooling the matrix, since it consists of crystals that are sensitive to high temperatures. Also, looking closely, you can find on the screen a grid of matrix pixels.
To improve image quality, manufacturers sometimes use several liquid crystal matrices. LCD projectors are one of the most popular segments in the projector market, the cost of such models can vary from 30,000 thousand rubles and more.
LP projectors
A relatively new development that already has its customers. The technology is based on a reflective matrix, which consists of many micromirrors. The light from this lamp is reflected from the matrix through a special light filter and hits the screen. A significant advantage in comparison with LCD projectors is the lack of pixel sec on the screen, this is achieved by a reduced border between the mirrors, compared to a liquid crystal matrix. Another positive point is the high level of brightness. This happens because the light flux hits the screen without loss, unlike LCD projectors. And the last plus is the lack of inertia.
Among the minuses, discrete imaging can be distinguished, either the point is illuminated or not.
The technology is imperfect, but manufacturers find a way out of the situation. By increasing the number of matrices and increasing the filters.
Don't buy cheap DLP projectors to watch videos. the generated image is quite specific and there is a flickering effect on the screen, which tires the eyes during prolonged viewing.
D-ILA projectors
The most powerful technology that incorporates the positive features of LCD and DLP projectors. Works on a reflective complex matrix of liquid crystals. Able to work at high temperatures. Experts consider this technology to be the best, and manufacturers develop it.
But, it is worth noting that these projectors are not common in life. The reason for this is too high a price, so your choice will most likely be limited to LCD and DLP projectors.
Projector resolution
In the old days, the resolution of the projector was at the level of standard PC video cards, but with the development of digital technology, high-definition television and the advent of DVD and FullHD, the resolution of projectors has become much higher.
Consider the common permission options:
SVGA (800x600)
XGA (1024x780)
SXGA (1280x1024)
UXGA (1600x1200)
QXGA(2048x1536)
Full HD (1920x1080)
WUXGA(1920x1200)
HD 4K (4096x2400)
In addition to those listed, there are also less common formats. As already mentioned, widescreen models are more suitable for watching movies. It is also worth noting that the trends of modern digital technologies and television largely determined the transition of the production of projectors to large-format matrices among manufacturers.
Modern projectors support common color formats PAL, SECAM, NTSC4, including high-definition television HDTV.
Please note that the higher the resolution, the better the picture on the screen will be and the higher the cost of the projector.
Luminous flux, brightness
Luminous flux units ANSI lm. We will not go into technical issues, but only give the values \u200b\u200bthanks to which you can navigate. For projectors designed for viewing movies in a darkened room, a luminous flux of 700 to 1500 ANSI lumens is sufficient. If your projector is used for presentations in well-lit rooms, it is advisable to purchase a high-brightness projector.
When buying, it is worth considering that the luminous flux indicated in the technical characteristics of the projector is lower than the actual values by about 10%, and in some cases even more.
Also, be careful not to expose the screen to sunlight. No, even the most powerful projector will provide a good, high-quality image in this case, so be sure to use blinds or curtains made of thick fabric when watching movies.
Network interfaces
Wireless data transmission is in trend today. The absence of wires, Wi-Fi and bluetooth technologies are firmly established in the life of every active PC user. Today's projectors are capable of receiving data over a network, including wireless. Having bought a special adapter, any projector gets the ability to receive streaming video.
Contrast
The ratio of the maximum illumination of the screen to the minimum is called the contrast ratio. Contrast is one of the most important factors when choosing a projector for your home theater. To date, manufacturers, competing with each other, are trying to slightly increase this parameter in the characteristics of the product. With all this, production technologies do not change at the same time and it is almost impossible to understand on the basis of what the manufacturer puts this or that figure. Unfortunately, all this plays a cruel joke on the buyer and choosing a projector by contrast is quite difficult. For example, in 2004 this value was approximately 3,000:1, and in 2010, the number in the passport data is 10,000:1. You have to focus on the brand and your own perception.
projector lens
Modern projectors are equipped with zoom lenses. This greatly simplifies the work, it becomes possible to change the image size without moving the projector from place to place.
The ability to control the image, focus adjustment exists today from the remote control.
In the most advanced models, the lenses are equipped with electric drives, which allow not only manually, but also from the remote control, to change the image scale and adjust the focus. This quality, of course, is convenient, especially when the projector is mounted on the ceiling, but it increases the cost of the device. The most important characteristic of the lens is the so-called. Throw Ratio Pro is a value equal to the ratio of the projection distance to the width of the image. Standard lenses have Pro in the range of 1.8-2.2, long-focus - up to 4-8, short-focus - 0.8 -1.2. Recently, projectors have appeared with extremely small values of the projection ratio. Capable of producing images 80 to 100 inches diagonally (approximately 180 to 200 cm wide) at a projection distance of only 8 to 30 cm, these projectors are primarily intended for use with interactive whiteboards and other specialty applications.
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April 26, 2024 00:01:04 +0300 GMT
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