The highest resolution supported by the NEC PA572 is 4096 x 2160. That's over four times the resolution of a 1600 x 1200 (UXGA) projector, which is the most frequently found resolution supported by projectors of a comparable type and age to the PA572. This NEC data projector also support supported graphics resolutionss of 2048 x 1080, 1920 x 1200 (WUXGA) and 2560 x 1600 (WQXGA) and 640 x 480 (VGA).
This data projector's resolution (4096 x 2160) is in fact the best supported resolution amongst all multimedia projectors that have been around for around the same time as the PA572.
Amongst similar types of data projector the worst supported resolution is 640 x 400.