The Panasonic PT-EW540 supports a maximum resolution of 1920 x 1200 (WUXGA). That's over seven times the resolution of the most frequently found graphics resolution of 640 x 480 (VGA) (which is also supported by this data projector). This projector also supports a graphics resolution of 1280 x 800 (WXGA).
This projector's resolution (1920 x 1200 (WUXGA)) is in fact the best supported resolution amongst all comparable spec projectors that have been on the market for more than two years.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution across comparable types of projector.