Epson EMP-74 User Manual page 40

Adjusting the Screen Image
When the projector is tilted vertically, it will cause keystone distortion to
appear in the image. However, the projector is equipped with an automatic
keystone correction function that can automatically correct this keystone
distortion as long as the vertical angle of tilt is within a range of
approximately 15º *. Automatic keystone correction is carried out
approximately one second after the projectors power is turned on and the
projector has been positioned.
Approx. 15º above
Approx. 15º below
15º
15º
* This value applies when the zoom ring is turned to the maximum "T"
setting. If the zoom ring is turned to the "W" setting, the available angle
of tilt for automatic adjustment will be less.
TIP
• Automatic keystone correction is not carried out when the
"Projection" command in the "Advanced" menu is set to "Front".
• If you would like to make further adjustments after automatic
keystone correction has been carried out, you can use the [Keystone]
button on the projector's control panel.
• When keystone correction is carried out, the projected image will
become smaller.
• If the images become uneven in appearance after keystone correction
is carried out, decrease the sharpness setting.
• If automatic keystone correction is not required, set "Auto
Keystone" in the "Setting" menu to "OFF".
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p.51, p.54
p.58