Using The Lens Shift Adjustment; Vertical / Horizontal Lens Shift - Eiki EK-620UA Owner's Manual

Using the Lens Shift Adjustment

The projection lens can be moved up, down, right, and left with the motor-driven lens shift function. This
function makes the positioning of images easy on the screen. Lens shift is generally expressed as a
percentance of the image height or width, see below illustration.
Vertical / Horizontal Lens Shift
Vertical Image Offset: 0% Offset (WUXGA)
600 pixels
above lens
center.
600 pixels
above lens
center.
Vertical Image Offset: 100% Offset (WUXGA)
600 pixels of
shift above
lens center.
Lens center
Lens center
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DLP Projector — Owner's Manual
No offset is applied - 0% offset.
Half of the image appears above lens
center and half of the image appears
below lens center.
Image has been offset 600 pixels above
lens center, so the center of the image is
now 600 pixels above where the center
of the image was at 0% offset (or lens
center).
The offset is +600/600 * 100% = +100%