Image Adjustments - Projectiondesign F22 User Manual

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IMAGE ADJUSTMENTS

Various optical adjustments are available, depending
on your choice of lens. All lens adjustments are
motorized and controlled by the keypad, remote
control or by RS232 or LAN.
Two kinds of lenses are available; fixed or zoom. A
fixed lens has permanent focal length, or throw ratio. A
zoom lens has variable focal length or throw ratio.
In addition, fixed lenses may or may not be shiftable,
depending on type and model. See the specifications
for the particular lens.
The throw ratio is defined as the ratio between the
projection distance to the screen and the projected
image width. With a fixed lens, this ratio is set. With a
zoom lens, this ratio can be changed within certain
limits specific to the lens in use.
On the keypad, first select lens function, then use the
cursor keys to adjust. On the remote control, zoom
and focus are direct keys, while lens shift is operated
by first selecting SHIFT, then use the arrow keys.
A mechanical SHUTTER is employed that totally shuts
off the optical image path. The shutter is directly
available from the keypad and the remote control. The
shutter is also in place when there is no lens attached.
Select a lens suitable for the application. A range of
lenses from very wide to super telezoom is available.
Adjust the horizontal and vertical SHIFT, if applicable,
in order to align the image on screen.
If a zoom lens is used, adjust the image to the right
size. If a fixed lens is used, relocate the unit to achieve
the right image size.
FOCUS the image properly.
Adjust the IRIS to achieve the desired optical balance
between brightness and contrast. In a bright
environment, brightness is usually maximized resulting
in reduced contrast. In a dark environment, less light is
needed and desired, while high contrast and deep
blacks are appreciated.
To level the image, adjust the feet as needed by turning
the feet accordingly.
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