Acer P5290 User Manual page 35

Adjusting the horizontal or vertical image position
P5271/P5271i/P5271n/P5290
The vertical image height can be adjusted between 5% and 30% of the image
height. (The minimum vertical image offset is fixed at 5% of the image height
above the centre of the projector lens.)
With the lens in the centre position the horizontal image position can be
adjusted to the left or right by up to a maximum of 30% of the image width.
5%
Left Side (30%W)
Screen
Distance (L)
Screen Width (100%W)
Maximum Shift
Right Side (30%W)
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