Obtaining A Preferred Projected Image Size; Shifting The Projection Lens Vertically - BenQ Home Cinema W20000 User Manual

Home cinema series digital projector
Table of Contents

Advertisement

W20000-en.book Page 12 Monday, October 22, 2007 3:35 PM

Obtaining a preferred projected image size

The distance from the projector lens to the screen, the zoom setting, and the video format each factors in the
projected image size.
The projector should always be placed horizontally level (like flat on a table), and positioned directly
perpendicular (90° right-angle square) to the horizontal center of the screen. This prevents image distortion
caused by angled projections (or projecting onto angled surfaces). If the projector is mounted on a ceiling, it
must be mounted upside-down.
This projector is equipped with a movable lens. See
can see the diagrams on pages
when the lens is shifted fully up or down.
If the projector is positioned further away from the screen, the projected image size increases, and the vertical
offset also increases proportionately.
When determining the position of the screen and projector, you will need to account for both the projected
image size and the vertical offset dimension, which are directly proportional to the projection distance.
BenQ has provided separate tables of dimensions for both 16:9 and 4:3 screen ratios to assist you in determining
the ideal location for your projector. There are two dimensions to consider, the perpendicular horizontal distance
from the center of the screen (projection distance), and the vertical offset height of the projector from the
horizontal edge of the screen (offset).

Shifting the projection lens vertically

The vertical lens shift control provides flexibility for installing your projector. It allows the projector to be
positioned slightly above or below the top level of the projected images.
The lens shift (offset) is expressed as a percentage of the projected image height. It is measured as an offset from
the projected image's vertical center. The projector is equipped with + 120% and - 80% vertical lens shift. You
can shift the projection lens upwards or downwards within the allowable range depending on your desired image
position.
To adjust the vertical position of the projection lens:
1.
Press LENS or
remote control, or LENS SHIFT
adjustment page.
(Pressing ENTER in the Picture -- Advanced > Lens Shift menu
performs the same function.)
2.
To raise the projected image, press
Shift
on the projector.
To lower the projected image, press
Shift
on the projector.
Projector position:
Floor front or floor rear
(C)
(D)
Center of the lens
See pages
14
and
12
Positioning your projector
"Shifting the projection lens vertically"
14
and
15
for the vertical offset values in the dimension tables that are measured
/
(when the OSD menu is not activated) on the
/
on the projector to display the
on the remote control or Lens
on the remote control or Lens
Projector position:
Ceiling front or ceiling rear
(D)
(C)
15
for the corresponding values of (C) and (D).
below for details. You
Picture -- Advanced
Black Level
Clarity Control
Color Temperature
Color Temperature User_ Fine
Gamma Selection
Brilliant Color
Color Management
Dynamic Black
IRIS
Lens Shift
S-Video
Lens Shift
Center of the lens
0 IRE
Normal
2.4
On
On
0
ENTER
EXIT Back
EXIT Back

Advertisement

Table of Contents
loading

This manual is also suitable for:

Home cinema w5000

Table of Contents

Save Article as PDF