The highest resolution of the PT-EZ580 is WUXGA (1920x1200). That's over two times the resolution of the most frequently found native projector resolution of WXGA (1280x800).
This data projector's resolution (WUXGA (1920x1200)) is actually the best resolution amongst all 5000:1 contrast ratio projectors that were released more than two years ago.
Amongst comparable types of data projector the worst resolution is XGA (1024x768).
We think you might also be interested in some of the alternative multimedia projectors that have a resolution of WUXGA (1920x1200) currently available including cheaper projectors such as the EB-4950WU[pl_1949830_price], or the EB-G6550WU[pl_1892937_price] both from Epson.