At present, there are two modes for projectors to sneak shots of images: 4: 3 and 16: 9, which are common to projectors. It's just that the effect of your projector is usually 4: 3, which is much better. With the diagram of 16: 9, it will show such an effect: up and down compression, left and right elongation, the overall effect will still be discounted. If the display screen of a real widescreen projector is 16: 9, that is to say, the resolution is 1280×800, then the projected effect will not be compressed or lengthened.

What the landlord said is that if you use a widescreen 16: 9 computer, connect the projector of 16: 10 with 1280×800, then your projected picture will not have any influence, and the effect is very good! I think Mitsubishi projector GW-365 is the real widescreen projector, 16: 10. You can learn about it first!