Digital zoom: When the projector is a fixed-focus lens, it is impossible to adjust the lens position to zoom, so there is a digital zoom function. Through the internal processing chip of the projector or through the algorithm to simulate the zoom, the display range can be reduced according to a certain proportion, so only the screen can be reduced, and it cannot be enlarged beyond the original screen. The digital zoom function will affect the resolution of the picture, which may cause the picture to be unclear.

What are the advantages and disadvantages of the zoom function

optical zoom

Advantages: The ability to adapt to space is stronger, and it can project a larger picture at a short distance without damaging the picture quality.
Disadvantages: high cost, loud noise, large size.

digital zoom

Advantages: low cost, small size, low noise.
Disadvantages: damage to the picture quality, only the picture can be reduced, and dark shadows will be left around the picture.