Based on the imaging principle of projector, the closer to the wall, the smaller the picture will be, and the farther away from the wall, the larger the picture will be. Therefore, if the space is large enough and conditions permit, you can easily adjust the size of the projection screen by moving the position of the projector. This method is convenient and simple, and it is the most commonly used way.

2. System Settings:

If the space is not so rich that it is difficult to move the projector to resize, you can choose resizing in the system settings of Betan projector F 1, and then manually resize the global zoom.

3. External setting resolution:

In addition to daily use, when some devices are connected to the projector for use, the screen size will also change. At this time, if the picture does not automatically adapt to the normal size, you need to adjust the resolution through a signal source (such as an external laptop).