Owner's manual

28 29
This chart on the right (figure 31) provides a target suitable
for optically focusing projection equipment. Please note that
direct view CRT or flat panel displays do not have optical focus
adjustments. The chart also contains elements to assist in adjusting
electronic image enhancement, usually called “sharpness,” found
in most display systems of any kind.
Set up the framing and centering of your projection equipment
using the “Overscan” chart found elsewhere on this disc. Once the
basic setup of your projector is satisfactory, use this focus chart to
set fine optical focus. The major starburst pattern on the chart is
designed to visually indicate the best focus adjustment. Adjust the
optical focus so the center of the chart shows the highest detail
level. Optical focus may interact with projector sizing. You may
need to touch up the basic setup so the points of the arrows on
the chart’s edges just touch the margins of the screen area. Text
is shown on the chart to assist in setting focus for best readability.
ROOM
LIGHTING
CONDITIONS
If your room lighting is relatively dark such that these settings
create an image that’s too bright, you may reduce the Contrast
setting to create a more comfortable picture. The Contrast control
actually sets how white the whitest object is on the screen and may
be adjusted downward to prevent an overly bright image. You may
need to touch up the Brightness control after setting the white
level to ensure shadow details are not lost.
(figure 31)*
SHARPNESS
ADJUSTMENT
shaRpNEss & FOCUs ChaRt
If your equipment has an electronic adjustment for “sharpness,”
use the black and white box patterns and the text to assist with
this setting. The sharpness adjustment is not a substitute for
incorrect optical focus. Sharpness is used to artificially define
object edges to create the perception of additional resolution.
If used improperly, it can severely impair the image quality.
Observe the chart’s sharpness blocks and the text while adjusting
the sharpness control. The samples on the preceding page
(figure 32), show some of the effects of adjustments. The left
sample is uncompensated as seen on the chart. Adding a slight
ADVANCED | PREMIUM CALIBRATION TOOLS
MONITOR SELECTION
Uncompensated Mild Sharpness Too Much Sharpness
(figure 32)
*Digital Reference Standard