First: Before buying a projector, we must know the difference between a commercial projector and a home projector.
1. The commercial projector has different positioning and application environment between the home projectors greatly. The lumens of commercial machines are higher than household appliances as the commercial places are relatively bright. If the brightness of the projector is not enough, it’s hard to see it clearly, but if the brightness is too high, the screen is easy to distort.
2. The contrast of the commercial machine is much worse than that of the home machine.
3. Picture scale and resolution. 4: 3 narrow screen ratio in commercial occasions is still very common, the resolution of the general is up to 720P. However, the home projector is usually 16: 9 widescreen picture and the mainstream models of the resolution has been popular to 1080P, and more sophisticated 4K has begun to develop.
In conclusion, there is no need that we pay a lot of money for an expensive commercial projector as it’s not suitable for personal use. A good cheap home projector is enough.
Second: How much area I need to use the projector?
Because of the principle of projection, the projector needs a certain distance to project a large picture. Each projection of the projector varies depending on the parameters of the lens, but in most cases, about 4 meters can be cast 100 ~ 120 inches large screen.
Third: Black level capability
Among the several elements that affect the quality of the picture, the black bit ability means a lot: in the black place, to be completely black, can not be replaced as dark gray and the details can be seen at the same time. This indicator directly determines the contrast and also has a direct impact on the color saturation.
Forth: Projector resolution
Common resolutions are as follows:
SVGA: 800x600 economic projector common resolution
XGA: 1024x768 mainstream business and educational projector resolution
SXGA +: 1400x1050 image-oriented high-end professional applications such as high-end projector resolution
480p: 852x480 low-end home projector
720p: 1280x720 mid-range home projector
1080p: 1920x1080 high-end home projector
Therefore, the general 720p and 1080p resolution projector at home are more appropriate to use. I bet there is high-quality cheap HDMI projector in the market now.
Fifth: Service life
When purchasing the projector, we have to pay attention to the service life, because the life of the projector is generally much shorter than the TV. The life of the projector is generally around four years. But the projector's bulb will be generally broken around a year or two. So when you choose the projector, pay attention to its warranty period as well as after-sales service. Or maybe a WiFi display HDMI adapter will be also useful.
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