Optoma HD70 Manual page 36

Use of Keystone is
not recommended.
English
36
Image is out of focus
Make sure the Lens cap is removed.

 Adjusts the Focus Ring on the projector lens.
Make sure the projection screen is between the required

distance 4.9 to 39.4 feet (1.5 to 10.0 meters) from the pro-
jector. See page 16.
The image is stretched when displaying 16:9 DVD title
When you play anamorphic DVD or 16:9 DVD, the projector
will show the best image in 16: 9 format on projector side.
If you play the LBX format DVD title, please change the
format as LBX in projector OSD.
If you play 4:3 format DVD title, please change the format
as 4:3 in projector OSD.
If the image is still stretched, you will also need to adjust
the aspect ratio by referring to the following:
Please setup the display format as 16:9 (wide) aspect ratio

type on your DVD player.
Image is too small or too large
 Adjust the zoom lever on the top of the projector.
 Move the projector closer to or further from the screen.
Press [4:3], [16:9], [Letter Box], [Native] button on the re-

mote control or [Projector menu] on the projector panel, go
to "Display  Format". Try the different settings.
Image has slanted sides:
If possible, reposition the projector so that it is centered on

the screen and below the bottom of the screen.
 Press [Keystone +/-] button until the sides are vertical on
the remote control.
Image is reversed
 Select "Setup  Projection" from the OSD and adjust the
projection direction.
Appendices