Dell Projector Crooked Picture?

Question

Hey everyone,
So I have a dell projector that I project from the back of a room onto a while. I noticed today that the picture was pretty crooked so I did some adjusting and got the top of the picture aligned and both of the sides straight (I used a yard stick). The bottom however is off by about an inch from one side to the other. Meaning the bottom corner off one side is an inch higher then the bottom corner on the other side.

I was using an all white screen, I know the walls/floor are not crooked, and the projector is on a flat surface. What settings could I adjust that would only affect the bottom, or do I need to readjust the entire thing.

Answer 1

To get an image that has vertical sides and a horizontal top and bottom the projector must be mounted flat and square to the screen. This means:

- the projector must be located on a line drawn from the mid point of the screen and at a 90 degree angle in the horizontal plane (side to side) toward the projector location. Imagine a sheet of plywood lying on its long edge, with one end touching a line drawn top to bottom through the centre (side to side) of the screen and into the room. Now imagine the sheet of plywood is at exactly 90 degrees to the screen. The projector should be located on a line projected along the top, long edge of the plywood.

- The projector must also be flat (front to back and side to side).

If not, move the projector and/or adjust horizontally or up and down to eliminate tilt in either plane.

Most projectors project the image up at an angle relative to the projector plane. This means the projector must be lower than the bottom of the screen (if table mounted) or higher than the top of the screen and inverted if ceiling mounted. If the projector has horizontal or vertical offset adjustment capability you can use it to adjust image location, but you still must ensure the projector is flat (side to side).

From the sound of it you have something not square and/or level. Whether you need to adjust it depends on how much the distortion bothers you.

If you have a trapazoidal image (because of tilt up or down) you can use keystone adjustment to correct it, but this is not advised since it introduces scaling artifacts in the image (degraded picture). It is better to make the projector flat and adjust the height to get the -- now squared up -- image on the screen.

Hope this helps.

Answer 2

Dell Projector Screen

Answer 3

Go to the projector settings function. Adjust the "keystone". Others as necessary.

Answer 4

dell sucks