Projection Operations

Keystone Correction (KEYSTONE)

When the projector is at an angle to the screen it is projecting on, the projected image may have different length left and right edges, or top and bottom edges. This phenomenon is called, “keystoning”. This projector comes with functions for automatic as well as manual keystone correction, which provides a regularly shaped projected image.

zKeystone correction (auto or manual) can cause dustortion of the projected image. If this happens try moving the screen and/or projector so they are oriented close to the configuration shown under “Setting Up the Projector” on page 30.

zDepending on the angle between the screen and projector, keystone correction can cause the corrected image to be smaller than the original (uncorrected) image, or it can cause deterioration of the image. If keystone correction causes problems with your image, relocate the screen and/or projector so the line between them is as straight as possible.

Auto Keystone Correction and Auto Focus

Under the initial default configuration of the projector, the AF/AK mode is configured so both auto keystone correction and Auto Focus are performed when you press the [AF/AK] key. You can also configure settings of the Continuous AF/AK Mode.

■AF/AK

Auto keystone correction and Auto Focus are enabled when [AF/AK] is selected for

“Option Settings2 J AF/AK Mode” (page 106) on the setup menu. Note that this is the initial default setting. With this setting, auto keystone correction and Auto Focus are performed automatically whenever the [AF/AK] key is pressed.

■Continuous AF/AK

Continuous auto keystone correction and Auto Focus are enabled when [Continuous AF/ AK] is selected for “Option Settings2 J AF/AK Mode” (page 106) on the setup menu. This function comes in handy when it is necessary to project to a surface that is far away from the projector or at a sharp angle from the projector.

When Continuous AF/AK is enabled, pressing the [AF/AK] key once enters a pre-focus mode, which displays an alignment chart and starts continuous Auto Focus. Pressing the [AF/AK] key again performs auto keystone correction.

Note also that the projector automatically enters the Continuous AF/AK mode whenever projector power is turned on while [Continuous AF/AK] is selected for “Option Settings2 J Power On AF/AK Mode” (page 107) on the setup menu.

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