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Positioning your projector16
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.
16:9 is the native aspect ratio of this projector.
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 18, 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 directly
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).
4:3 aspect image in a 16:9
aspect display area
16:9 aspect image scaled to a 4:3 aspect
display area
16


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