The highest resolution of the Optoma EH505 is WUXGA (1920x1200). That's over two times the resolution of a XGA (1024x768) multimedia projector, which is the most frequently found resolution.
A WUXGA (1920x1200) projector native resolution is in fact the best resolution amongst all 2000:1 contrast ratio projectors that were launched around the same time as this data projector.
An XGA (1024x768) projector native resolution is the worst resolution across similar types of multimedia projector.
What does "projector native resolution" mean?