Benq HT1085ST Keystone Correction

[MikeMyers]

I have the Protee and a Benq HT1085ST projector.
I would like to throw a 16:9, 12' 6" x 7' image.
I would like to have my hitting sensor tee 8' from the screen.
The placement of the projector as I understand it, would put the backside of the projector at 8' 7" which would place the lens almost exactly where I would like to hit from.
My question is, can I offset the projector placement 1' and use the keystone correction? Has anyone used this function? What does it actually do to the picture quality?

Thanks

[Hoosierdaddy]

I don't use a Benq but I had the same setup until last year. I never noticed any picture issues on the side to side. But my projector was much further back (21-22 ft) and I had it at 11ft high. I did notice that for the top to bottom there was a focus issue. You could get one or the other right but not both. But I think I was the only one who ever noticed it.

[rdh]

I just bought the same projector. I wish I would have investigated it more...I hooked it up where I had my old one, and the projected image (about 14' from the screen) was MAMMOTH! I wish it had more zoom capability. I'm now working on relocation and hiding the wires, etc. Hopefully the picture is worth the effort!