BenQ Portable Entertainment Series User Manual page 103

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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.
Aspect Ratio settings can only be adjusted when HDMI is selected as the source.
Auto
Aspect Ratio
Real
4:3
16:9
High Altitude Sets whether the projector increases fan speed in high altitude settings to increase the intake of air to cool the projector. Select
Mode On to enable an increased fan speed. Select Off to keep the projector's fan working at normal speed.
Options 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.
Projects the input image without scaling. The projected image will be centered. If the input image is smaller
than the native resolution of the projector, the area outside of the projection area will be black. If the input
image is larger than the native resolution of the projector, the outer edges of the image will be cropped.
A PC input source with 720x400 resolution does not support real aspect ratio.
Scales a picture so that it is displayed in the center of the screen with a 4:3 aspect ratio.
Scales a picture so that it is displayed in the center of the screen with a 16:9 aspect ratio.
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