The annual 315 Consumer Rights Protection Day has arrived, and we can see a variety of cases related to consumer rights and interests. When we buy products on a daily basis, if we can learn more about the relevant information in advance, we can avoid a lot of the trouble of rights protection. This article summarizes some of the pit avoidance guides for buying a home projector, and friends who plan to buy a projector in the near future can learn about it.
Projectors and flat-screen TVs have a big difference, the projector has the advantages of being able to easily project a large picture, a smaller space occupation, easy to carry, etc., can provide a large immersive field of view that is difficult to achieve on the TV, etc., has a lot of audience groups, before purchasing, determine whether you are more suitable for buying a projector.
Projection brightness: Look for ANSI lumens
Common projector light source includes LED, lamp and laser these three, no matter which light source method, the most important is the projector brightness, which will directly determine the projector's screen performance, so we can first look at the brightness parameters of the projector when purchasing.
However, it should be noted that the flow brightness of some products is not much reference value. For example, some label the brightness of the light source flow, although the data is very good, but this only represents the original light machine brightness, the actual projection brightness will be much lower.
ANSI lumens can more realistically reflect the actual brightness of the picture seen by the user, so you need to pay attention to this parameter when purchasing. For example, in the price range of 2,000 to 3,000 yuan, many products can reach more than 1000 ANSI lumens, which has a relatively good effect in low light. But if you want to use it in well-lit scenes, 2000 ANSI lumens above will have better results.
Projection resolution
In addition to brightness, projection resolution is also a parameter that needs to be paid attention to. Resolution for most people should be no stranger, the higher the resolution, the richer the details that can be displayed, the clearer the picture, and the projector resolution is a similar standard.
However, when looking at the product introduction, you should also pay attention to it, for example, some projectors say on the introduction page that they support 1080P Full HD, compatible with 4K or 8K Ultra HD resolution. This does not mean that this projector supports 4K or 8K projection, but it means that the projector supports playing 4K or 8K high-resolution video files, but the actual projection is also the effect of 1080P resolution, so the general compatibility of the resolution reference is not significant.
E-commerce platform filtering options
At present, the projector mainly has several display technologies such as DLP, 3LCD, LCOS and LCD. LCOS projection effect is good, but it is mainly used in high-end projectors at present, and the price is more expensive. LCD is a relatively backward technology, usually used in cheap 100-dollar projectors. At present, the ordinary home projectors within 10,000 yuan on the market mainly use DLP and 3LCD display technology, both of which are more common display technologies at present, and the display principle is different, each has its own advantages.
3LCD is a three-piece projection continuous imaging technology, which has the advantages of good color performance, image stability, and effective avoidance of rainbow phenomenon.
DLP display technology is a digital light processing technology, but also a mature display technology, with small screen shadow, smaller volume, long life, low cost and other advantages.
Among them, the DMD chip is the main imaging device of DLP display technology, through a large number of micro-lens reflection imaging above, each micro-lens is equivalent to a pixel, so the size of the DMD chip determines the imaging quality of the projector. Generally speaking, the DMD chip of 0.47 size can achieve standard native 1080P resolution projection, while the DMD chip of 0.33 size is generally 1080P resolution achieved by high-speed jitter, in fact, it is not counted as native 1080P resolution, and the actual projection effect of the two will be more obviously different.
Theoretically, with a projector with DLP technology, the larger the size of the DMD chip, the higher resolution and better image quality can be brought. Somewhat similar to the size of a camera sensor, the larger the sensor area, the better image quality can be obtained. If you're looking for a projector with DLP technology, you can pay attention to the size of the DMD chip.
Of course, for ordinary users, there is no need to pursue too high a configuration, and the general standard native 1080P resolution projector has been able to meet most of the scene needs.
Trapezoidal correction function
Generally, the projector is installed on the projection wall to have a better projection effect, but in many scenes, due to space limitations, projection can only be achieved by side projection. This method will lead to picture distortion, this time you need a trapezoid correction function to correct the picture, so this function is also more important.
Some projectors support fully automatic trapezoidal correction, no need to manually adjust, casually put can be automatically calibrated, placement is more free. Some projectors only support manual keystone correction, which is relatively troublesome to use, and if it does not support left and right trapezoid correction, it is impossible to achieve side projection. If you need to cast sideways, keep an eye on this feature.
Another noteworthy is the projection ratio, which refers to the ratio of the projection distance to the width of the picture. The smaller the projection ratio, the shorter the distance required to project a picture of the same size. For example, if the same projection is 100-inch, the shorter the projection ratio, the shorter the distance required for the projector.
Especially in some rooms with small spaces, the smaller the projection ratio, the more flexible the application. In addition, the shortened projection distance can also reduce the probability of the object in front of the screen affecting the picture. In simple terms, the smaller the projection ratio, the smaller the demand for space, if you are more tight on the space at home, it is best to pay attention to it when purchasing.
In addition, when purchasing, you also need to pay attention to the chip performance of the projector, whether the system is intelligent and easy to use, such as whether it supports wireless screen projection, whether content playback is convenient, etc., which are very important for daily use experience.
The above is the aspect that you need to pay attention to when choosing a home projector, which can help you understand the difference between different projectors from the parameters more clearly, avoid some unnecessary trouble, and choose more suitable products. If you have any shopping tips, please feel free to leave a comment below to discuss.