BenQ MP780ST+ User Manual download pdf (Page 17)

Positioning your projector 17

Obtaining a preferred projected image size

The distance from the projector lens to the screen, the zoom setting (if available), and the

video format each factors in the projected image size.

The projector should always be placed horizontally level (like flat on a table), and

positioned directly perpendicular (90° right-angle square) to the horizontal center of the

screen. This prevents image distortion caused by angled projections (or projecting onto

angled surfaces).

If the projector is mounted on a ceiling, it must be mounted upside-down so that it

projects at a slightly downward angle.

You can see from the diagram on page 19, that this type of projection causes the bottom

edge of the projected image to be vertically offset from the horizontal plane of the

projector. When ceiling mounted, this refers to the top edge of the projected image.

If the projector is positioned further away from the screen, the projected image size

increases, and the vertical offset also increases proportionately.

When determining the position of the screen and projector, you will need to account for

both the projected image size and the vertical offset dimension, which are proportional to

the projection distance.

BenQ has provided a table of screen sizes to assist you in determining the ideal location for

your projector. There are two dimensions to consider, the perpendicular horizontal

distance from the center of the screen (projection distance), and the vertical offset height

of the projector from the horizontal edge of the screen (offset).

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 103 104

No comments

BenQ MP780ST+ User Manual Page 17