What are the problems when using a wide screen video projector?
Wide screen projectors can be either of the tube type or of the LCD/TFT* type. The tube types have three different tubes, one for each color, produce very bright images, but need frequent alignment, while the LCD/TFT* type are usually less bright and need no alignment. The projection screen plays a major role in picture brightness and clarity as well, and the best screen should be chosen to suit the chosen projector. Another important factor is the size of the projector, which is sometimes bulky and heavy, and needs special installation. The projected image contrast is extremely important for achieving a vivid and rich image on the screen. The contrast ratio (the ratio of brightness of the lightest part to the darkest part of the picture) is very important. Tubes and DLP* technology provide a better contrast ratio then LCD/TFT screens.
