Originally Posted by dreamer
That is light spill out the front vents on the projector. If it was hung closer to the ceiling it would be much smaller than "4 feet", but it is always there. With a dark painted or fabric ceiling it is not distracting, but it is definitely there.
The LG would not come close to the same brightness and would never be satisfying on that large an image.
At that image size, the W1070 must be positioned with the center of the lens a minimum of 4.5" above the top of the image and a max of 9" above it. The vertical lens shift at default will get the lens as low as the 4.5" figure and adjusted all the way out can hit the 9" figure. If the projector was level and square to the screen, no keystone correction would be needed.
Its not the light vents though, if I put my hand on the bottom of the projector, top upside down, as the plane, and slowly move it out as it approaches a few inches out, the light on the ceiling is effectively blocked.
I guess I could make a blinder and attach it to the top of the projector to simulate what my hand does.
The 1070 lens is recessed in the housing, adjustments are done internal of the housing, my sharp's lens protruded from the housing, adjustments were done on the ring outside of the housing.
Thanks for the vertical shift info, I never had that adjustment before, lol.
The shift was at max in the down so I just went the other way with it.
I guess I missed it when I looked over the manual.
I moved the projector closer to the ceiling, center of the lens is 31.5 inches from the ceiling, top of the image is 36 inches from the top and I was able to return keystone to 0.
I reduced the image size to 13 foot width and the bottom of the image is about 35 inches off the floor.
Looks great, thank you.
Except its still a little bright, my sharp had an iris control that would allow to switch between modes, bright and high contrast.