Projectors will not function properly if they use the wrong lenses. On the outside, all projector lenses may look the same, but there are certain features that make one lens better than the others.
For instance, a lens’s throw will determine how far you can position the projector and still get the image quality that you are looking for. Most projectors have a long throw, meaning they have to be placed at a distance of seven feet or more from the screen so that the image will remain in focus. On the other hand, there are also short throw projectors that can project onto a large screen even if it is placed just a couple of feet away; these projectors are most suitable for small rooms and offices.
Another special feature that some projector lenses have is the lens shift. This is a feature that allows the user to position the projected image at the exact center of the screen. This feature lets users fine tune the position of the image by shifting it vertically or horizontally without messing up the focus.
You need to take into consideration your particular needs before you can choose the right projector lens to use. Keep in mind that not all lenses are the same, so you might need to try out several options before you get the right one for you.