Benq SH940 Manual De Propietario

  13

  Positioning your projector

En

glish

The distance from the projector lens to the screen, the zoom setting, and the video format each factors 
in the projected image size.

This projector is equipped with a movable lens. See 

 for details. 

You can see the diagrams on pages 

 for the vertical offset values in the dimension tables that are 

measured when the lens is shifted fully up or down.

If you are using a 120-inch, 4:3-aspect-ratio screen, please refer to 

. The average projection distance is 494 cm.

If you have a 16:9-aspect-ratio screen and your measured projection distance was 4.5 m (450 cm), please 
refer to 

. The closest match in the 

 column is 449 cm. Looking across this row shows that a 100-inch screen is required.

Checking the min and max projection distance values in the columns of 

 indicates that the 4.5 m measured projection distance will also fit the 90 and 110-inch size 

screens. The projector can be adjusted (using the zoom control) to display on these different screen sizes 
at the projection distance. Be aware that these different screens have different vertical offset values.

If you place the projector in a different position (to that recommended), you will have to tilt it down or 
up to center the image on the screen. In these situations, some image distortion will occur. Use the 
Keystone function to correct the distortion. See 

 for details.

SH940_EN.book  Page 13  Wednesday, October 3, 2012  2:36 PM