2. 1024*768 is 4:3. 1280*800 and 1920* 1200 are16:10.1920 * 65438+.
3. Your use is commercial, at least 1024. Of course, the higher the resolution, the better, and the more detailed the picture.
4. At present, projectors have two formats: 16:9 and 4:3. If your screen is 4:3, please set the projector to 4:3.
I used to do this part of wedding projection, but now hotels are equipped with LED screens, so I put fewer and fewer wedding projections. Based on my personal experience, I can prepare a 100 inch 4:3 bracket projection screen, a 1024 resolution projector and a notebook. It is best to bring a projector bracket, so that the projector can be placed on it smoothly. It doesn't matter if it doesn't exist. You can also use a stool or chair. When playing, first estimate the distance between the projector and the projection screen to ensure that the projection screen is full. The projector is perpendicular to the center of the projection screen. Not difficult. The problems of 16:9 and 4:3 are not considered. Besides these two ratios, there are other ratios for you to choose from. Because you are indoors, don't choose the led projector.