[Purchase home theater projection screen pre-planning] Home projection screen purchase common sense

If you decide to buy a home theater, the first thing to consider is the ratio of the screen. After deciding on the ratio, the next question to be considered arises: How big is the screen? What is the ideal viewing distance? In fact, the answer is very simple, that is, it is easy for everyone. But here are some suggestions for you.　　 Everyone has their own preference for seats in theaters-some people like big images under a wide viewing angle; some people prefer big screens. The advantage of installing a front projector for the family is that you can choose all the models you like, so there is no so-called 'perfect choice'.
　　 There are only two points to note. Because we have full control over the size of the screen, the common mistake is to sit too close and cause the image to be too large. For physical needs, we should not sit too close to the big screen. For example, if we sit on the side of the first row and watch a tennis match, our heads will keep moving and our eyes will be very tired. This is definitely a painful experience. And if your screen is too big, then this will feel similar. Oversized images will give the audience a shocking feeling during the first 30 minutes of viewing, but long-term viewing will become a burden. When choosing the projector and the corresponding screen, you can do a practical test, that is, you can mark the desired model on the wall you need, and then place the seat at a certain distance you like, and experience what you have on the spot. The marked screen size. You can adjust the image size and your viewing position until you feel comfortable.
　　 Another thing to note is that the larger the image projected by the projector, the closer the seat is to the screen, the more scanlines and artifacts there will be. If you look at a two-foot-wide screen from two feet away, you will see a lot of blemishes; but if you view an image of the same size from ten feet away, the effect will be much better-it's just a matter of the projector's zoom ratio.
　　 For XGA and WXGA projectors, the viewing effect is the worst at a viewing distance of 1.5 times the screen width. Even though you can get large images, you will get tired easily. And when the distance from the screen is equal to twice the width of the screen or farther, you will enjoy a very good image effect, and the defects will be minimized.
　　 In the viewing distance of 1.5 times to 2 times the screen width, the closer to the screen, the clearer the screen, but at the same time there will be more blemishes. For XGA and WXGA projectors, a viewing distance of twice the screen width is the most suitable viewing location, and the image effect and screen size are just suitable. But everyone's preferences are always different, and you can adjust them appropriately according to your own preferences.
　　 The above is the main basis for screen selection. Obviously, high-resolution projectors support larger screens and closer viewing distances without affecting the image effect; on the contrary, low-resolution SVGA projectors are suitable for longer viewing distances to eliminate visual image defects.