Celine2020
Member
Faced with the wide variety of projection products on the market, how should we choose? The author summarizes several hard "conditions", which can avoid everyone from falling into the trap of bad merchants when buying.
Standard resolution ≠ compatible resolution
As the name implies, standard resolution refers to the physical pixels of the TFT-LCD used, which corresponds to the logic points output by the graphics card, so LCD screens often have only one optimal display resolution. The definition of compatible resolution is the resolution of the input signal that can be supported, and it is not necessarily related to the actual screen displayed on the screen.
For example, if the standard resolution of a projector is 720P, it is compatible with 1080P resolution. This is just to compress the 1080P source to 720P. The original resolution is still 720P, but it can only play the 1080P source. Be careful not to be fooled.
Lumen ≠ ANSI Lumen
Brightness is very important for a projector. The higher the brightness, the better the projected picture, and the price is relatively more expensive.
What you need to remember is that lumens ≠ ANSI lumens.
Many businesses like to play word games, to give two examples,
The larger the contrast value, the better
Contrast refers to the measurement of different brightness levels between the brightest white and the darkest black in the bright and dark areas of an image. The larger the difference range, the greater the contrast, and the smaller the difference range, the smaller the contrast. At present, the common contrast ratios of home projectors on the market are below 1000: 1, 5000: 1, 10000: 1, 50000: 1 and so on. Generally speaking, the greater the contrast, the clearer the image and the more vivid the colors, and vice versa.
The bigger the display chip, the better
At present, there are 5 types of display chips, namely: LCD, 3LCD, DLP, 3DLP, LCoS, but commonly used are three types of DLP, LCD, LCos, these three technologies have their own advantages and disadvantages. Everyone should pay attention when buying, the larger the size of the display chip, the better the picture quality, and the higher the price.
Standard resolution ≠ compatible resolution
As the name implies, standard resolution refers to the physical pixels of the TFT-LCD used, which corresponds to the logic points output by the graphics card, so LCD screens often have only one optimal display resolution. The definition of compatible resolution is the resolution of the input signal that can be supported, and it is not necessarily related to the actual screen displayed on the screen.
For example, if the standard resolution of a projector is 720P, it is compatible with 1080P resolution. This is just to compress the 1080P source to 720P. The original resolution is still 720P, but it can only play the 1080P source. Be careful not to be fooled.
Lumen ≠ ANSI Lumen
Brightness is very important for a projector. The higher the brightness, the better the projected picture, and the price is relatively more expensive.
What you need to remember is that lumens ≠ ANSI lumens.
Many businesses like to play word games, to give two examples,
1. A projection indicates that its brightness is 3200 lumens in the parameters, but it is actually only 1200-1300 ANSI lumens;
2. It is also a certain projector that the brightness is 4000 lumens in the parameters, but it is actually only 950 ANSI lumens;
And you will also find that the numbers converted by the two are inversely proportional, mainly because the brightness of the light source is converted into ANSI lumens without a clear conversion formula, which leads to the latter value becoming a variable.
Therefore, when you buy a projector, the brightness should be accurate to ANSI lumens.
The larger the contrast value, the better
Contrast refers to the measurement of different brightness levels between the brightest white and the darkest black in the bright and dark areas of an image. The larger the difference range, the greater the contrast, and the smaller the difference range, the smaller the contrast. At present, the common contrast ratios of home projectors on the market are below 1000: 1, 5000: 1, 10000: 1, 50000: 1 and so on. Generally speaking, the greater the contrast, the clearer the image and the more vivid the colors, and vice versa.
The bigger the display chip, the better
At present, there are 5 types of display chips, namely: LCD, 3LCD, DLP, 3DLP, LCoS, but commonly used are three types of DLP, LCD, LCos, these three technologies have their own advantages and disadvantages. Everyone should pay attention when buying, the larger the size of the display chip, the better the picture quality, and the higher the price.
