BenQ CP120C - Manual (Page 30)

Using the projector 24
Auto-adjusting the image
In some cases, you may need to optimize the picture quality.
Fine-tuning the image size and clarity
Refer to the screen size tables in "Obtaining a preferred projected image size" on page 12 .
Correcting keystone
Keystoning refers to the situation where the projected image is noticeably wider at either the
top or bottom. It occurs when the projector is not perpendicular to the screen.
Manual keystone correction
To correct keystoning manually, you can
perform the following steps.
1. Adjust the projection angle of the
projector.
2. Press the AUTO button.
3. If the image is still distorted, you will need
to manually correct it following ONE of
these steps.
• Press the Keystone / 3Left or
Keystone / 4Right buttons on the
control panel of the projector to display the status bar labelled Keystone. Press the
To do this, press the AUTO button. Within 3
seconds, the built-in Intelligent Auto
Adjustment function will re-adjust the values
of Frequency and Clock to provide the best
picture quality.
The current source information will be
displayed at the bottom right of the screen for
3 seconds.
The screen will be blank while Auto is
functioning.
1. Adjust the projected image to the size
that you need using the zoom ring. 2. Then sharpen the image by rotating the
focus ring.