Epson EMP-835 User Manual page 70

Adjusting Projected Images Manually
• Quick Corner:
This correction function is used when both horizontal and vertical
keystone distortion occurs in the projection area to adjust the projection
area so that it fits the screen exactly.
The above correction method is selected automatically when automatic
vertical keystone correction and Auto Quick Corner are carried out. The
selection conditions are as follows.
• When only automatic vertical keystone correction is carried out, or when
Auto Quick Corner is carried out for a projection surface such as a wall
that has no borders.
H/V-Keystone is selected. The setting in the "Keystone" configuration
menu will also change.
• When the screen has a border and Auto Quick Corner is selected
Quick Corner is selected. The setting in the "Keystone" configuration
menu will also change.
• When Auto Quick Corner is not carried out
Correction is carried out according to the setting in the "Keystone"
configuration menu.
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• Vertical keystone correction can be carried out up to a maximum of
approximately 45°. Horizontal keystone correction can be carried
out up to a maximum of approximately 25°.
Do not set up the projector at an upward angle of more than 12° or a
downward angle of more than 4°.
However, the corresponding angle will be smaller under any of the
following conditions.
· If the projector is tilted both vertically and horizontally
· If the zoom has been adjusted to "W"
• The larger the angle of tilt, the poorer the focus of the contours in
the projected images will become.
• If a large amount of keystone correction is applied, fine details such
as text characters and lines may go out of focus. If the text part of the
image is blurred after keystone correction is carried out, decrease the
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sharpness setting.
• Keystone corrections that have been applied using the keystone
correction functions are memorised even when the projector's power
is turned off. If you have changed the projection position or angle,
you will need to repeat the correction procedure.
• When keystone correction is carried out, the projected images will
become smaller. Use the zoom function to adjust the size of the
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images if necessary.
User's Guide
69