Panasonic PT-LB30U - Manual (Page 36)

36-E
NGLISH
Correcting keystone distortion
Keystone distortion is corrected automatically when the projector’s automatic
setup function is used, but this correction will not apply if the screen itself is
tilted. In such cases, you can correct the keystone distortion manually with
the following procedure.
Vertical
keystone
distortion
correction
Operation Press the H H button. Press the I I button.
K E Y S T O N E 0
NOTE:
B If you press the AUTO SETUP button after correcting the keystone
distortion manually, the automatic keystone correction function will
operate and the corrected picture will return to its previous incorrect
condition. To prevent this from happening, you can set “AUTO
KEYSTN” in the “OPTION” menu to “OFF”. (Refer to page 45.)
B Vertical keystone distortion can be corrected to ±30° of the angle of tilt.
However, the greater the correction amount, the more the picture
quality will deteriorate, and the harder it will become to achieve a good
level of focus. To obtain the best picture quality, set up the projector
and screen in such a way that the amount of keystone correction
required is as minimal as possible.
B The picture size will also change when correction of keystone distortion
is carried out.
B The ratio of length and width of an image may become incorrect
depending on the amount of the keystone correction.
B Keystone distortion of the on-screen display will not be corrected.
Vertical keystone distortion correction only.