Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting, and the video format each factors in the projected image size.
4:3 is the native aspect ratio of this projector. To be able to project a complete 16:9 (widescreen) aspect ratio image, the projector can resize and scale a widescreen image to the projector's native aspect width. This will result in a proportionally smaller height equivalent to 75% of the projector's native aspect height.
4:3 aspect image in a 4:3
aspect display area
Darkened bar (12.5% height)
Darkened bar (12.5% height)
16:9 aspect image scaled to a 4:3 aspect display area
The projector should always be placed horizontally level (like flat on a table), and positioned directly perpendicular (90°
If the projector is mounted on a ceiling, it must be mounted
You can see from the diagrams on page 17, 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
How to determine the position of the projector for a given screen size
1.Select your screen size.
2.Refer to the table on page 17 and find the closest match to your screen size in the left columns labelled "Screen size". Using this value, look across this row to the right to find the corresponding average distance from screen value in the column labelled "Average". This is the projection distance.
Positioning your projector | 15 |