Contrast; Compression Level - Oki CX3641MFP Technical User Manual

SEE THE FOLLOWING
SECTIONS FOR
INFORMATION ON
SETTING CONTRAST:
Copy (see "Contrast" on
•
page 40)
Scan to E-mail (see
•
"Image Quality" on
page 51)
Scan (see "Image
•
Quality" on page 68)
THIS OPTION NOT AVAILABLE IN
THE SENDME AND FAX
FUNCTIONS
SEE THE FOLLOWING
SECTIONS FOR
INFORMATION ON
SETTING THE

COMPRESSION LEVEL:

Scan to E-mail (see
•
"Compression Level" on
page 52)
Scan (see "Compression
•
Level" on page 69)
SendMe (see "About the
•
SendMe Digital File Format
Settings" on page 85)
THIS OPTION NOT AVAILABLE IN
THE COPY AND FAX FUNCTIONS
Scan to E-mail: Contrast

Contrast

Using the Contrast controls can make detail appear by increasing the
contrast between adjacent gray levels. It adjusts the tonal range of
an image.
• For decreased contrast in an image — that is, duller whites and
grayer blacks — use a lower number Contrast setting.
• For increased contrast in an image — that is, brighter whites and
darker blacks — use a higher number Contrast setting.
Remember that the controls adjust the relative contrast of the
NOTE:
entire image.
GRAYSCALE IMAGE
SCANNED WITH A
LOWER CONTRAST
SETTING
C
ONTRAST
FIGURE 7-7.
Compression Level
Compression algorithms are designed to reduce the size of an image
file without noticeably degrading the image when it is displayed. The
CX3641 lets you set a compression level for digital files:
• The higher the number, the more the file is compressed. The more
the file is compressed, the smaller the file size.
• The lower the number, the less the file is compressed. The less
the file is compressed, the larger the file size.
In SendMe, select a compression "quality" instead of a level:
NOTE:
Low, Medium, High, or Maximum. In Scan to E-mail and Scan,
"10" provides the most compression and smallest file size;
"OFF" means the file will not be compressed.
Note that at some point a too-low compression setting can
compromise the quality of images in your digital file — there may be
loss of detail. If you select a higher number and see that images don't
look right, select a lower compression level and re-scan your original.
CX3641 Advanced Technical User Guide
ORIGINAL
GRAYSCALE
IMAGE
: G E
RAYSCALE XAMPLE
GRAYSCALE IMAGE
SCANNED WITH A
HIGHER CONTRAST
SETTING
113