Chapter 1
Preparation — Precautions for use
ENGLISH - 21
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Focus adjustment
The high clarity projection lens is thermally affected by the light from the light source, making the focus generally
unstable in the period just after switching on the power.
This projector is equipped with the active focus optimizer function and automatically corrects the focus based
on the detected temperature change of the lens or the detected change in brightness of the image, enabling the
focus to be stable even just after switching on the power or when there is a large change in brightness of the
image.
For details of the active focus optimizer function, refer to the [PROJECTOR SETUP] menu
→
[LENS]
→
[ACTIVE
FOCUS OPTIMIZER] (
x
page 128). Operational specifications and factory default setting differ depending on
the projection lens.
When using the projector with the active focus optimizer function disabled, it is recommended to perform the focus
adjustment after 30 minutes or more have elapsed with the focus test pattern displayed.
For details of the test pattern, refer to “[TEST PATTERN] menu” (
x
page 150).
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Do not install the projector at an altitude of 2 700 m (8 858') or higher above sea level.
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Do not use the projector in a location where the ambient temperature exceeds 45 °C
(113 °F).
Using the projector in a location where the altitude is too high or the ambient temperature is too high may reduce
the life of the components or result in malfunctions.
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Projection in all 360° direction is possible.
360°
360°
360°
360° vertically
360° horizontally
360° tilted
(combination of vertical and horizontal)
