An important role in creating a comfortable perception of the image and video through the projector is played by the screen. To properly determine its choice, you need to know all about the types, sizes and materials of the coating.
How to choose a portable screen for a projector on a tripod?
So, we will choose the screen on a tripod for the projector, relying on successive stages. And on the first of them we need to decide on the type of screen we need.
If you plan to use the screen exclusively within a single room, you can look boldly at the roll screens that are attached to the ceiling and wall. But if you need to conduct presentations in a variety of places, you need a portable portable screen on a tripod.
Probably, you might need a screen with a reverse projection, when the projector is located behind it. Such screens are less sensitive to lighting, besides the projector and the rest of the equipment will be hidden from viewers and will not interfere with them.
The second step in selecting a screen for the projector is determining the required size. This step is very responsible, and here it is necessary to be guided by such rules:
- The screen should not be wider than 1/2 of the distance to the spectators in the first row;
- The screen should not be more than 1/6 of the distance to the viewers in the last row;
- The screen should be at least 1/8 of the distance from the viewers in the last row;
- The lower boundary of the screen should not fall below 125 cm from the floor, so that all viewers can see the picture completely.
The next moment is choosing the screen format. Depending on the projector, any image has a certain aspect ratio - heights and widths. For overhead projectors with a square format, the screen format will have a 1: 1 aspect ratio. If you have a multimedia projector that shows in video format, the aspect ratio of the screen should be 4: 3.
For slide projectors with a format of 35 mm, the aspect ratio of the screen will be 3: 2. Well, for viewing movies on DVD and other HDTV formats, the screen proportions should be 16: 9.
Logically, to get the best result you need to use a screen similar to the image format. As a universal screen rolls with a format of 1: 1 and 4: 3. For example, having a screen for a projector on a tripod measuring 200x200 cm, you can unwind the roll to a certain height by adjusting the screen format to the image format.
Finally, the last important criterion for choosing a projection screen on a tripod is the cloth and coating material for the projector screen. Depending on the ability of the coating material to reflect and diffuse the light entering it, the brightness of the image will differ.
The choice of fabric for the screen depends on the purpose of its use. But in any case, you need to consider the brightness of the projector and its location, as well as lighting conditions in the room and its configuration.
If the screen cover material is chosen incorrectly, not all viewers will be able to see the image displayed on the screen. The most universal option is a screen with a matte white coating with a reflection coefficient close to close to 1. It will reflect and scatter
Recently, screens with a "beaded" coating are quite common. On their surface there are microscopic beads made of glass, reflecting incident light within a narrow space. The image transmitted to such a screen looks very bright and beautiful, if you look at it at a right angle. However, for viewers located on the side, the picture will be much duller.