Originally Posted by Chezteladog
... From the little reading I've done it would seem that it's not going to be as easy as buying a screen and a projector and wham. Movie theater. For instance the placement of the projector seems to be very important. I have a 20ft long room with an opening at the opposite end from where the screen would go. I thought maybe I could mount the projector in the back and to the side somehow but it doesn't have the corrective ability to do something like that does it? And is it ok to be that far from the screen? I have a ceiling fan right in the middle of the room so now I'm thinking I would have to mount the projector from the ceiling and below the ceiling fan which means this thing is going to be hanging head level in the middle of the room....
You may have a few options. First, you need to use the Projector Central calculator to see what range you can mount the projector from the screen. As you are going a drop down screen in front of your Plasma, make sure you are measuring the distance to the screen and not to the wall.
Drop downs (manual or automatic) are often 84-120".http://www.projectorcentral.com/proj...ulator-pro.cfm
Use that link for the calculator. Pick the HD20. Play with the sliders and such. You may even want to quickly find a screen you are willing to buy so you know the likely screen size.
With any luck you can fill your desired screen at a distance that puts the HD20 in front of your ceiling fan.
The term you are talking about is called Lens shift. The HD20 has no lens shift. Most DLP, all lower cost ones that I know of, do not have lens shift. And they have a fixed offset, which the calculator will show that in a diagram for clarity and the actual distance of the offset based on screensize and distance from the screen.
So the HD20 will need to be centered to the screen left/right. And depending on the height of your ceiling, you might be able to do a coffee table setup. For a short time I was able to use a coffee table that had 2 levels. The top surface as normal and a mid level for magazines, etc. And I just put an HD70 there while working on my screen and mounting setup. And if I had a complex ceiling setup, I would have left it that way. So that might also be an option.
So, run with the calculator. Pretty much all DLP projectors under $3000 will not have lens shift and a low zoom range. Making DLP in general more strict in placement. But an LCD PJ with good zoom and lens shift, like the Panasonic models, will cost you a lot more than the HD20.