Need help with throw distance...

[rolyasm]

My friend needs a projector. His room is a family room/kitchenette, so his wifes wants the projector on the back wall, which is about 22 ft back. He wants his screen to be around 110". The models he has available at a good cost are:
Marantz VP8600
Optoma HD8000
JVC RS1
and I think a few Epson Models.

He is open to other models, but these three he can get at good pricing.
I tried projector central's calculator, but wasn't exactly sure what I was looking at. There is a green slider bar that gives quite a range. It started saying things like, reduce image or increase brightess... hmm. Anyway, is there anyway to tell by looking at the projector how I can set the throw. I look at the JVC and it says "Zoom Lens with 2 times Throw Ratio (1.4:1-2.8:1)" What in tarnation does that compute to? Anyway, any help would be appreciated.
The other option is a cheap non-electric setup he could use to keep the projector high until he needs it, then he can pull it down. He looked at electic platforms and they cost a lot. Maybe a hydraulic bar or something? If anyone has any thoughts, you are da man. Thanks in advance.

Oh, one more question. There is a decorative "picture" cutout on the back wall where the projector would be perpendicular to the screen. Can projectors compensate if they are placed off-center a few feet? Does this cause much distortion? I think the projector would have to be about 2 feet off-center to avoid the picture. Damn WAF.

Roly

 

[mtrycrafts]

My friend needs a projector. His room is a family room/kitchenette, so his wifes wants the projector on the back wall, which is about 22 ft back. He wants his screen to be around 110". The models he has available at a good cost are:
Marantz VP8600
Optoma HD8000
JVC RS1
and I think a few Epson Models.

He is open to other models, but these three he can get at good pricing.
I tried projector central's calculator, but wasn't exactly sure what I was looking at. There is a green slider bar that gives quite a range. It started saying things like, reduce image or increase brightess... hmm. Anyway, is there anyway to tell by looking at the projector how I can set the throw. I look at the JVC and it says "Zoom Lens with 2 times Throw Ratio (1.4:1-2.8:1)" What in tarnation does that compute to? Anyway, any help would be appreciated.
The other option is a cheap non-electric setup he could use to keep the projector high until he needs it, then he can pull it down. He looked at electic platforms and they cost a lot. Maybe a hydraulic bar or something? If anyone has any thoughts, you are da man. Thanks in advance.

Oh, one more question. There is a decorative "picture" cutout on the back wall where the projector would be perpendicular to the screen. Can projectors compensate if they are placed off-center a few feet? Does this cause much distortion? I think the projector would have to be about 2 feet off-center to avoid the picture. Damn WAF.

Roly

That throw distance tells you that for a given screen size, say 100", it can be mounted from 140" to 280"
But, with distance you suffer light on the screen so it can be much darker. And, some projectors need an area around its body to ventilate properly and not recirculate the hot air into the projector that would shorten its life.

As to the offset, you'd have to check each projector if it allows offset angles and distances. That too may depend on distance from screen. Most allow very little.

Don't know of a manual lift to use. Also, front projection needs very dark conditions. Does your wife know this?

Look around this website as it has some calculation tables there for all this you are looking for:

http://www.projectorcentral.com/

 

[BMXTRIX]

Here is a list of projectors with the zoom range to hit the screen from 22' from the lens to the screen.

http://www.projectorcentral.com/projectors.cfm?mfg_id=any&res_id=any&ar=2&td=22&is=110&bll=any&bul=any&cll=any&cul=any&wll=any&wul=any&prll=any&prul=any&an=0&lshift=1&dvi=-1&trig=1

Go to this link to change your variables:
http://www.projectorcentral.com/projectors.cfm

You will have to dig deeper and read reviews to find out if it offers the lens shift to satisfy the horizontal offset... but I'm 90%+ sure that the Sanyo does.

I would go with the Sanyo and a 1.4 gain Carada screen at that size.