One method that allows us to see the full picture of how it looks in a theater. As a result, the image width is greater than the height of it. In a TV screen with a standard format (4:3), the videos appear in letterbox format with black horizontal bar at the top and bottom of the image.

Many projectors, whether in a 16:9 or 4:3 native aspect ratio, are able to display multiple aspect ratios. However, while displaying their non-native signals, you will see black bars either on the sides (16:9 displaying 4:3), or at the top and bottom (4:3 displaying 16:9) of your image. Some projectors will project black in the blank area, while others will actually turn off the pixels for darker black area.

Where widescreen is becoming true widescreen again is in the home. Sure, you can view a CinemaScope (or 2.35:1) movie on a TV, but you’ll also encounter those annoying black bars (called letterboxing). Only some front projectors are capable of displaying a 2.35:1 aspect ratio without wasting screen space for letterboxing. These front video projectors use internal scalers and anamorphic lenses.