Sharpness Adjustment - Sony UPX-C300 - Document Camera - Compact Operating Instructions Manual

Picture quality variations when the D, L,
and Gm parameters are changed
Figure 2
Light
Variation
Level
Dark
DARK adjustment (D parameter)
You can adjust the dark parts. The default is 0.
Pressing B on the control button of the printer changes
the value in the plus direction to 1, 2 ... 7, making the
dark side of each of the RGB data increase
simultaneously in the linear direction that the depth
increases as shown in figure 2. This adds more depth.
However, the maximum effective darkness value is 0.
When the value becomes smaller than 0, saturation
occurs.
Pressing b on the control button changes the value in the
minus direction to –1, –2 ... –7, making the dark side of
each RGB data lighter and decreasing the darkness.
LIGHT adjustment (L parameter)
You can adjust the light parts. The default is 0.
Pressing B on the control button of the printer
simultaneously changes the R, G, and B parameters as
shown in figure 1, making the light side of each of the
RGB data increase simultaneously in the linear direction
that the brightness increases. This gives an overexposed
quality to the picture.
Pressing b on the control button makes the light side of
each of the RGB data darker, and gives you a picture that
seems underexposed.

SHARPNESS adjustment

You can adjust the sharpness of pictures.
Pressing B on the control button of the printer changes
the value in the plus direction from 0 to 1, 2 ... 7, adding
emphasis to edges in pictures. We recommend setting a
small value when the print size is small.
Subject Light
GAMMA adjustment (GM parameter)
You can adjust the gamma value. The default is 0.
Pressing B on the control button of the printer increases
the halftone of each of the RGB data in the direction that
the brightness increases.
Pressing b on the control button decreases the halftone
of each of the RGB data in the direction that the
darkness increases.
SHARPNESS
SHARPNESS adjustment is a function for adding
emphasis to edges in pictures. This function cannot be
used to increase the resolution. It is intended for
changing the sharpness.
SHARPNESS can be used as a parameter to improve
pictures, but increasing the sharpness too much will not
produce a natural picture. Generally, the default setting
is recommended. When a large print size is used and
SHARPNESS is set to a large value, picture quality does
appear to improve.
Contrast
In addition to the sharpness function, it is possible to add
sharpness to the image by adding the contrast of dark
and light. Contrast can be set using the DARK and
LIGHT items in the menu screen. Increasing the DARK
and LIGHT values in the plus direction increases the
contrast, and a high contrast image can be obtained. The
downside, however, is that increasing the contrast values
in the plus direction diminishes the amount of
information about white and black tones, and as a result,
the white and black gradation becomes coarser. Thus, an
appropriate contrast setting is required. We recommend
setting the contrast to +2 or +3.
46
Adjusting the Print Quality