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z The angles shown in the above illustration are subject to the following conditions. 

z Projection of an image from a computer (Resolution: 1024 

× 768; Vertical Frequency: 60Hz) 

z Resize Image To Fit: On 

z Actual correction ranges are affected by the type of signal being projected, zoom, the 

“Resize Image To Fit” setting, the aspect ratio setting, and other factors.

z Keystone correction can cause the corrected image to be smaller than the original 

(uncorrected) image, or it can cause distortion of the image. If the projected image 
becomes difficult to view, try moving the screen and/or projector so they are oriented 
close to the configuration shown under “Setting Up the Projector” in the “User’s Guide 
(Basic Operations)”.

The [AF/AK] key can be configured to perform one of the three Auto Focus (AF) and auto 
keystone correction operations described below. For information about configuring the [AF/AK] 
key operation, see “Option Settings2 

J AF/AK Mode” on page 59.

AF/AK Mode (initial default):Pressing the [AF/AK] key performs both keystone correction and 

Auto Focus. 

Pressing the [AF/AK] key projects an alignment chart that comes 
in handy when the projection distance is relatively far or when 
projecting at an angle. With the Continuous AF/AK mode, the 
projector continually performs Auto Focus as the projector is 
moved. For details about using the Continuous AF/AK mode, see 
“Performing Auto Focus and Auto Keystone Correction while 
Continuous AF/AK is Enabled”, below.

Pressing the [AF/AK] key again performs Auto Focus only.

Perform the following steps while [Continuous AF/AK] is selected for “Option Settings2 

J AF/

AK Mode” (page 59) on the setup menu.  

Press the [AF/AK] key. 

z This enters the pre-focus mode, which projects an alignment chart like the one shown 

below. 

z The size of the alignment chart depends on screen and projector setup conditions.