EDIT: I measured the offset again for a 98" screen at 11.5 feet away. And got an offset of 30%.... So I don't know at all how the review site got 33%. Maybe there is a default distance that this type of measurement gives a useful result. Either way, I love the projector and the picture. But after trying to hold it up to the ceiling... for no keystoning and a huge 100+ inch screen, it gets way too close to the ground with a big top gap.... Though I noticed only a tiny amount of keystoning if I centered it on the wall. Small enough that I wouldn't mind not squaring it off on a non-bordered screen. But I will probably reduce the screen size to about 92" so I can have a square picture with a ceiling flush mount at 7.5 feet.
Wow, I really love this projector. Great looking case and all. Glossy white.
With the kids and all, don't have time tonight to post images. But I will post something tomorrow for sure.
Wow, wow on the resolution. The 1280x720 really makes a difference over 854x480. So far I have only tried using my HTPC set at 1280x720 @ 75Hz. Looks increadible. I only have it projecting on my blank satin white wall, and it looks great.
Now for a simple test I did for the offset.
Set the projector lens at 100" from the screen. Lens centerline to bottom of image is 8.5" and the image is 35.5" tall. Which makes the offset only 24% ! That's great! I will double check my measurements again, but I can't be more than 1% off, I measured to the closest .25 inch. And did the projector lens at 100" from the wall to make it easy.
Here's the math: Reference any projector PDF manual for geometry terms.
projector on table.
100" from middle of lens to wall
18.5" from middle of lens to floor
27" from floor to bottom of image
35.5" image height
27 - 18.5 = 8.5" (equals lens centerline to bottom of image = H1)
L = 100"
H = 35.5"
H1 = 8.5"
Now L doesn't matter for this reverse test. I will test the projector at another distance and the % should be within 1% of my first test.
H1 / H = Offset %
8.5 / 35.5 = 0.239 or 23.9%
So I am not sure how the projector review site measured 33% and how the HD70 PDF online math comes out to 40%... but I measured it and came up with 24%. I will triple check again tonight if I can. But it's going to work great for me and my 7.5" ceiling. Now it's just a matter of deciding how big to go without the image bottom being too low and not hitting the crown molding either.