High End Systems DL.3 - Keystone Correction Parameters

CHAPTER 11
Global Functions
DL.3 Digital Light User Manual 129
Keystone Correction Parameters
When you output an image from a
projector at an angle, the image may
appear skewed. Eight Keystone
parameters
adjust the image shape
and compensate for this effect. You
can control
each of the four corners
of the graphics output to reshape
your image to a form that projects
correctly.
Default DMX Value: 0 = no
keys
tone correction has been
applied.
Each corner has an x and a y value that let y
ou adjust and correct the scale of the
projection from any corner toward th
e image center on that axis.
Setting all Ke
ystone X and Y parameters DMX values to zero will place the four corners of the
image at the four corners of the projector output. Adjusting keystone x values toward 255
(100%) moves the respective x corner positions horizontally toward the center of that image
edge. Adjusting keystone y values toward 255 (100%) adjusts the respective y corner positions
vertically toward the center of that edge of the image.
NOTE: DL.3 fixtures have vertical lens shift capability that provides additional
keystone control. Engage lens shift with your DMX console in the Control
Parameter of the Motion Control fixture type.
Top
Top Left X
Top Right X
Top
Bottom
Right Y
Bottom Right X
Bottom Left X
Bottom
Left Y
Right Y
Left Y
Original Content
Keystone Top Left X DMX value = 85
Keystone Top Left Y DMX value = 85
Keystone Top Right X DMX value = 85
Keystone Top Right Y DMX value = 85
Other Keystone parameter DMX values = 255
Keystone Top Left Y DMX value =128
Keystone Top Right X DMX value = 0
Keystone Bottom Left X DMX value = 239
Keystone Bottom Left X DMX value =0
Keystone Bottom Right Y DMX value = 2
Other Keystone parameter DMX values = 255