However, there is a digital zoom. However, I have not yet managed to save this setting. So you have to reset the image size after every restart. You can reduce the image to about half the size. There are also settings to compensate for skewed projection angles.

You can adjust the sharpness and shape of the image, but not the size of the image via optical zoom - the size of the image depends on the distance to the screen (fixed projection ratio 1.2:1)

You therefore need to position the projector at an appropriate distance from the screen to achieve the desired size - you cannot 'zoom' the projection as you can on a projector with a zoom lens. This reduces installation flexibility in terms of spatial placement.