Acer S1210 - Manual (Page 31)

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Projection
• Front-Desktop: The factory default setting.
• Front-Ceiling: When you select this function, the
projector inverts the image for ceiling-mounted
projection.
• Rear-Desktop: When you select this function, the
projector reverses the image so that you can project
behind a translucent screen.
• Rear-Ceiling: When you select this function, the
projector reverses and inverts the image at same time.
You can project from behind a translucent screen with
ceiling mounted projection.
Aspect Ratio
Use this function to choose your desired aspect ratio.
• Auto: Keeps the image with original width-height ratio
and maximizes the image to fit native horizontal or
vertical pixels.
• Full (S1310W/T220/XS-W10/S1310WHn/S1313W/
S1313WHn): The image will be displayed making full use
of the horizontal and vertical pixels.
• 4:3: The image will be scaled to fit the screen and
displayed using a 4:3 ratio.
• 16:9: The image will be scaled to fit the screen and
displayed using a 16:9 ratio.
• L.Box (S1310W/T220/XS-W10/S1310WHn/S1313W/
S1313WHn): Keeps the original signal aspect ratio and
zooms in by 1.333 times.
Keystone
Adjusts image distortion caused by tilting projection (±40
degrees).