The PT-DZ770 has a maximum resolution of WUXGA (1920x1200). That's over two times the resolution of a XGA (1024x768) projector, which is the most frequently found resolution.
A WUXGA (1920x1200) native projector resolution is actually the best resolution amongst all multimedia projectors of a similar type and age to the PT-DZ770.
An XGA (1024x768) native projector resolution is the worst resolution across comparable types of data projector.
We compared this projector to all the other projectors that have a resolution of WUXGA (1920x1200) and we think the Hitachi CP-WU9410 ($12,528.77) which is cheaper is also worth considering.