Install settings, Tterns, see “install settings, P107 – Canon REALiS 4K501ST Pro AV 5000-Lumen LCoS Projector User Manual
Page 107: All settings, Menu settings

107
Menu Settings
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Install settings
Adjust projection to suit the screen or the type of images, or how the
projector is installed.
(When the input signal is HDMI-1)
Menu
Function
Details
Positional lock
Operation of installation related functions can be
prohibited.
Image flip H/V
Specify settings for projection from behind the screen,
from the ceiling, or both.
Keystone
Specify the type of keystone adjustment.
Professional settings
Specify advanced installation settings.
Lens - Position
Store information about the lens position (including
focus, zoom, and lens shift settings), which can be
used to restore the lens to these positions.
Screen color
Adjust projection colors to suit the screen color.
Iris
The aperture value can be adjusted in a range of 1-3.
A smaller aperture reduces brightness but improves
contrast.
Test pattern
Project a test pattern to check the resolution and color
of projection during installation.