Several of the latest widescreen projectors to come to market feature the classic WXGA computer resolution format, 1280x768. The HD72 is one of them. The aspect ratio of this format is 15:9. The advantage to this format is that it will display both 1280x768 and standard XGA (1024x768) computer outputs in full frame native resolution without cropping or compression. For those using these signals this is a significant advantage. If you view a lot of 768-line material you may want to have your screen cut to a 15:9 aspect ratio so you can view it full frame. With that set up, your HDTV material will be displayed in 1280x720, and there will be small black bars at the top and bottom of the image.

On the other hand, if your viewing material is HDTV, DVD, and television, you will want to use the 16:9 operating mode, which is 1280x720. In this mode, all signals that are not native 720-line are scaled to 720 format. As a side note, one additional advantage to this mode is that there are 24 lines of digital image shift up or down that provide a similar function to physical lens shift. If you choose to operate in 16:9 mode, you will want a conventional 16:9 screen. The 720-line image will fill the screen, and the extra few display lines at the top and bottom (the small black bars) will fall invisibly onto the screen masks or frame.

The 16:10 aspect ratio (as opposed to the 16:9 used in widescreen televisions) was chosen because this aspect ratio is appropriate for displaying two full pages of text side by side.[1] It also allows viewing of 16:9 video on a computer with player controls visible. The 16:10 screen (and display device profile) also comes very close to what is considered an aesthetically pleasing, golden rectangle.