BenQ GSI Outdoor Leisure Series User Manual page 62

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The native display resolution of this projector is in a 16:9 aspect ratio. However you may use this function to display projected
pictures in a different aspect ratio
In the following illustrations, the black portions are inactive areas and the white portions are active areas.
Aspect Ratio settings can only be adjusted when HDMI is selected as the source.
Auto
Aspect Ratio
4:3
16:9
Adjusts the color settings of the image to suit the color of the wall on which the image is projected.
Wall Color
The following Wall Color options are provided: Off, Light Yellow, Pink, and Blue.
Submenus and descriptions
Scales a picture proportionally to fit the projector's native resolution in its horizontal and vertical width.
This makes the most use of the screen and maintains the aspect ratio of a picture.
Scales the picture so that it is displayed in the center of the screen with a 4:3 aspect ratio.
Scales the picture so that it is displayed in the center of the screen with a 16:9 aspect ratio.
15:9 picture
4:3 picture
16:9 picture
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