The highest resolution supported by the Acer S1283 is 1920 x 1200 (WUXGA). That's 20% more resolution than a 1600 x 1200 (UXGA) data projector, which is the most common resolution supported by projectors of this age and type. In addition, this data projector supports a graphics resolution of 1024 x 768 (XGA).
This multimedia projector's resolution (1920 x 1200 (WUXGA)) is actually the best supported resolution amongst all 13000:1 contrast ratio projectors that were released more than two years ago.
The worst supported resolution across comparable types of multimedia projector is 640 x 480 (VGA).