Most consumer projectors use two types of technology: LCD and DLP. There is usually a regular lamp for each light source, but some higher-end LCD and DLP projectors are powered by lasers. In any case, LCD and DLP use radically different technology, and they have some major advantages and disadvantages.
LCD: In the modern LCD home cinema projector, the powerful light source is divided into red, green and blue beams by a series of mirrors. Then the colors go through three LCD screens containing the movie or whatever you are looking at, skipping only the relevant parts of the image. These color channels, each containing the image, are then brought together in the prism and passed through the lens of the projector.
Although most manufacturers use DLP projector technology, Epson has largely stuck with its 3LCD system on its 5050UBe 4KK home theater and other Sony projects. Our Ually LCD projectors beat DLP models in the field of sharpness, efficiency and color accuracy. However, they tend to have lower contrast ratios, are larger in volume, and may experience image degradation and dead pixels over time. In addition, 4K LCD projectors are usually more expensive than equivalent DLP projectors at present.
DLP: DLP projectors have some very external technologies. They use an optical semiconductor called a digital micromirror device (DMD) that contains millions of aluminum mirrors. These little mirrors can actually move, tilting to or away from the light source up to 5000 times per second.
Most DLP projectors use a single chip, so they need a color wheel to filter light in red, green and blue. Six-segment wheels with recurring primary colors (RGBRGB) have the best color accuracy, while four-segment wheels with primary colors and white (RGBW) are brighter.
 DLP projector manufacturers include Optoma, LG, BenQ, and Panasonic. The advantage of DLP technology is its portability, high contrast, less fringe and cheaper projectors, especially when it comes to 4K. DLP projectors also tend to have less lag between image and signal, so they're generally better for games.
The biggest problem with DLP is the so-called arc effect. Due to the spinning color wheel, some viewers tend to see bright rainbow artifacts, especially if they suddenly look away from the image. However, the problem affects some people more than others (personally, it doesn't bother me at all). Cinema-class DLP projectors typically use 3 separate chips, one for red, green and blue. This completely eliminates the color wheel and the effect of the rainbow.
Projectors versus TVs
There are some disadvantages and disadvantages to projectors compared to TVs. If you anticipate these and adjust your attitude accordingly, you will receive incredible benefits that are not available to any TV owner.
First, the projectors reflect the light from the screen while the TVs emit their own light. These screens (or walls) reduce the brightness compared to a TV and reflect other light sources so that the projectors do not work very well during the day or with ambient light.
While some bright projectors like the BenQ 3000 lumen TK800 ($ 1,099) can handle some daylight, the image will look washed out compared to a TV. Therefore, for best results, you will want to use a projector in a darkened room. Even then you won't get black as good as a QLED or OLED TV.
Projectors require warm-up and shutdown times, so you can't just start and start. Unlike TVs, few projectors have decent built-in sound, so you'll need some kind of sound system. Most projector lamps have a life span of around 4000-6000 hours, so if you watch TV three hours a day, you will only need to change the bulb for three and a half years. These can cost up to $ 250.
Elite & # 39; s $ 410 Starling 2 motorized screen projector 1965 you can use to be able to use the screen to be able to do it, you can find the screen to be able to do it, you can find the screen that you can use to you can use the screen you can find so you can do it, but you can find the screen A decent, inexpensive, downloadable Amazon model for less than $ 100, but for convenience, you'll want to spend $ 200- 600 for a decent-sized motorized screen, the higher the reflectivity, the brighter the image. You will also need a fairly large room. While projectors and screens take up very little space when mounting the ceiling, you need to be within a decent distance of a large screen for maximum benefit.
Plus, many projectors, even cheap ones, will allow you to blast the image up to 200 inches. Obviously this gives you a lot more screen size for your dollar. Many inexpensive home theater models support 4K and HDR and these things are more cost effective and noticeable when designed to a very large size.
What to look for
When choosing a projector, you first have to decide how much to spend. With this figure in mind, you can then shop for a projector with the features you want.
Here are some of the main fashion words:
Luminance in lumens: Home theater projectors typically vary in brightness between 2000 and 3000 lumens. However, you will need to take these figures with a grain of salt. While some models can hit 3000 lumens or more, turning the lamp to this level can damage image quality and damage the life of the bulb. In addition, some manufacturers tend to exaggerate the maximum brightness by 25 percent or more.
Color Accuracy: One of the great advantages of spotlights is that they usually deliver 10-bit (one billion) colors, HDR10 for cinema and its broadcast equivalent, HLG. This is ideal for moviegoers who want to see content the way creators intend, especially since HDR is not supercooled (too saturated) on projectors, as it often is on TVs.
Good projectors can deliver 95 percent or more of the advanced DCI-P3 color gamut, and some even reach 75 percent of the demanding Rec.2020 color space. These numbers are generally far above what most 4K TVs can do. Some projector manufacturers, notably BenQ, will provide color reports showing "Delta E" the difference between the measured colors of the projector and the base standard.
Fan Installation and Noise: It's usually advisable to mount a projector on the ceiling to save space, so budget the mounting bracket and all the long cables you need (don't forget the extra power for Google's quirky Chromecast). Also, keep in mind that it is easier to mount a lightweight projector, and DLP models are usually lighter than those with LCD technology. If ceiling mounting is not possible, most projectors can be placed on the floor, and some are designed primarily for this purpose, such as the LG $ 2,800 HU80KA eccentric.
Some projectors are noisier than others, and usually the more you spend, the less noise you get. Many of the new 4K DLP projectors, when operating in 4K mode, are particularly noisy. There is one more (cool) thing: if your projector is easy to download and place, you can take it outside for magical night screens under the stars.
Resolution and HDR: Yes, there are some cheap 4K projectors out there, but it's important to understand how they work. Many BenQ, Optoma, and other DLP projectors use the latest .47-inch DLP chips from Texas Instruments. These have 1080p, not true 4K native resolution, which would dramatically increase projector costs (imagine eight million small mirrors instead of two million).
However, the BenQ HT3550 ($ 1,499) uses a technique called "pixel shifting", which radiates each pixel four times while moving it to the correct position for a 4K image. It does all this in less than 1/60 So even though it doesn't have a built-in 4K chip, it puts as many pixels on the screen at the same time as the 4K native projector, making it 4K in most people's books and visually performing almost the same.
On the other hand , Epson LCD projectors also have 1080p native resolution, but the image just shifts two times, not four times. So these projectors are not 4K native or otherwise, but produce twice the resolution of a 1080p projector. If you really want a 4K native projector, two of the cheapest are the VPL-VW295ES ($ 5,000) from Sony and the JVC DLA-NX5 ($ 5000).
If you prefer to save money and get a 1080p projector, there is good news out there. Most models come with HDR10, which gives you more color and dynamic scope. For many people, this is a more important feature than resolution.
Contrast: The contrast ratio is the difference between the darkest blacks and the brightest white parts of the image and is most noticeable to the viewers. This is also the most confusing statistics for buyers. Manufacturers can list full on / off contrast by giving you a figure of 150,000 to 1, or quote an ANSI contrast, a much smaller number, calculated differently. In any case, no figure necessarily matches the true capabilities of the projector – you need to see a demonstration in person.
Optics: Depending on your home theater configuration, this can be crucial. If you're hungry for space, you may need a "short throw" model that can be installed close to the screen. A good example of this is LG's $ 6,000 CineBeam laser. If you have a little more space, you should make a model like the Optoma GT1080 gaming projector ($ 600).
If you are mounting a projector at a more conventional length (between five and 25 feet), you may need to consider the magnification range and whether the projector has the lens shift option. A decent zoom range will make it easy to mount the projector where you want it with the screen size you want.
Meanwhile, lens shift is used if the projector is mounted higher or lower than the screen recommended by the manufacturer (or any horizontal center distance). This produces a trapezoidal image, but as you type in some lens shift, you can optimize it optically. Otherwise, you may need to use a "touchstone" that digitally stretches or shrinks part of the image, resulting in noticeable distortions or pixel artifacts.