Runco 3Dimension D-113d Spécifications Page 70

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Installation
54 D-113d Projection System Installation/Operation Manual
PRE
L
IMINAR
Y
Adjusting the Image
Geometry
Projector and/or screen placement — among other things — can cause geometric
distortion in the projected image.
To correct this, the DHD Controller provides precise, nine-point control over the projected
image geometry. Use these controls as (and only if) needed to re-position the image
corners, mid-points and center to eliminate “keystoning” (mis-aligned corners) or
“pincushion” distortion (mid-points not aligned with corners). See Figure 3-23.
Figure 3-23. Keystone and Pincushion Distortion
“Keystoning” usually occurs when the projector is tilted relative to the screen. “Pincushion
distortion can sometimes occur if the throw distance is very short and/or the projector is
equipped with an anamorphic lens.
Vertical Keystoning
Horizontal Keystoning
Pincushion Distortion
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