Remember that a film shot in 18fps and projected in 24fps means that the filmspeed increases 25 percent. Sometimes it's useful to do this, mainly to exclude the anoying flickering. It's not only the projector that has an inpact on the film quality. It's also important to choose the right screen. There are 4 main types of screens.
None are perfect for all conditions.
The white matt screen has a smooth white surface and can be anything from a white wall to a screen made especially for motion pictures projection. The colours are good on this sort of screen and the light is good all over the image. This screen spreads the light well to the sides giving audience that sits on each side of the room a view just as good as the people sitting in the middle. Hence, the light the screen reflects is not as good as for the other screen types. This screen is ideal for wide rooms with a large audience.