What should you care about when buying your first home projector?

As the demand for large-screen entertainment continues to increase and the price of projectors continues to decline, more and more home users turn their attention to projectors when considering entertainment display equipment. Especially when smart devices are popular, a series of low-cost short-throw smart portable projectors have flooded into the market at extremely low prices, bringing temptation to many consumers.

However, in the face of this emerging product, there will be a lot of confusion in the minds of consumers. What knowledge should I pay attention to when buying a home projector? What is the price of the general product? Let's do a brief introduction for users.
About brightness:
When purchasing a WiFi home projector, most people should first look at the technical parameters of the product. Not to mention the resolution, this basically cannot be faked, as long as the physical resolution or compatible resolution is remarked at the bottom. However, brightness does require user consideration.
Although the brightness unit of projectors are all lumens, they are not uniform. Some manufacturers use ISO lumens, while others use ANSI lumens. The two units are completely different in brightness. Due to different standards, these two units cannot be directly converted, and many manufacturers also use users' lack of understanding of brightness to exaggerate their brightness advantages. Generally speaking, the brightness of ANSI lumens is much higher than that of ISO lumens, and basically 400 ANSI lumens can achieve a brightness of 1500 ISO lumens.
For users, the brightness of the ISO stream of more than 2000 projectors can be displayed normally in more intense lighting environments. The brightness of more than 1000 ANSI lumens will make users feel extremely dazzling when watching and affect their eyesight. Generally speaking, projectors with brightness between 2000 ISO lumens and 3000 ISO lumens can already meet the needs of users in any environment.

About keystone correction:
At present, almost all projector manufacturers have adopted the digital keystone correction technology, and most projectors using digital keystone correction support the vertical keystone correction function, that is, the projector can adjust its height in the vertical direction, resulting in a trapezoidal vertical keystone projection The instrument calibration makes the picture rectangular, which is convenient for users to use.
However, in practical applications, in addition to the need for vertical keystone correction, trapezoids often appear due to the offset of the horizontal position of the projector. Many projector manufacturers have developed "Horizontal Keystone Correction". Both horizontal keystone correction and vertical keystone correction are digital keystone correction, and the shape is adjusted and compensated by software interpolation algorithm. The horizontal keystone correction solves the horizontal keystone distortion caused by the fact that the mirror surface of the projector cannot be perpendicular to the screen, so that the projector can also achieve a standard rectangular projection image on the side of the screen.
When digital keystone correction does not require high image accuracy, it can solve the problem of keystone distortion well, and it is very practical. However, it is not suitable for applications requiring high image accuracy. Because, after image correction, some lines and character edges of the image may appear glitchy and unsmooth, resulting in poor resolution.

About curtains:
Many users pay attention to the screen when buying a projector, but they always don't know if they really need it.
In terms of projection effect, the screen is a good choice for the projector, whether it is a low-priced white screen or a slightly higher-priced glass bead screen, it can enhance the user's visual experience. However, when the brightness of conventional home projectors is generally above 2000 ISO lumens, it can achieve very good results even if it is directly projected on a white wall in a bright environment. Moreover, the price and quality of curtains are uneven, and the cheap goods of a few hundred yuan will soon turn yellow and discolored, and even the high-end goods will not last two or three years.
So if the wall the user is projecting on is white instead of colored, you can choose a slightly brighter home projector, regardless of the curtains. If the walls are not white then you must have a curtain. Inexpensive white curtains are not only cheap, but also bring a soft visual experience. Although the bead curtain is more expensive, it can enhance the brightness and expand the viewing angle. Users can choose according to their needs.