It is native 720p.. however, it does indicate onscreen what the input signal is...
Wehn I have my skyhd digibox plugged in which is set to 1080i, it says so on the screen.. for some reason, the projecot is not detecting the 1080i output from the xbox (which is greyed out).. I dont reallyunderstand why this is greyed out, when 1080p isnt..!!
If I set it to 1080p, obviously the picture is awful....
When I am using my pc through the projector, to use 1080i, I have to set it to 1920x1080 @ 30hz, which as it is interlaced, is what it shoudl be...
So my pc, and digibox both work fine on 1080i, but the 360 doesnt!!
Thats all that I can deduce with my setup...