Xante FilmMaker 4, Руководство пользователя

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2-20 Macintosh Setup bb
• Optimized for Quality compresses image data for faster printing than normal but
with some (usually not noticeable) loss of image quality.
• Optimized for Speed implements a greater degree of data compression to provide
the fastest print time but with the possibility of a noticeable loss of data quality.
Optimize selections do not function if the print job contains an image that is masked
or rotated to anything other than 0
°
, 90
°
, 180
°
, or 270
°
.
Gamma
The Gamma feature allows you to adjust printer output for ink, media, file, and
environmental conditions. For example if a scanned image is too dark, you can select
a new gamma setting to lighten and enhance the details. XANTÉ provides seven
standard gamma curves available through the Gamma menu in the Print dialog box.
Gamma curves 1 through 5 progressively lighten the midrange values in an image.
Gamma 0 (the factory default) makes no change to the image, and Gamma 6
produces a reverse (negative) image without changing the image in the application.
Graphs in figure 2.45 show the change to the midrange gray levels.
1
1 0
Output Levels
Black
White
Input Levels
Gamma 6
Black White
1
1 0
Output Levels
Black
White
Input Levels
Gamma 5
Black White
1
1 0
Output Levels
Black
White
Input Levels
Gamma 4
Black White
1
1 0
Output Levels
Black
White
Input Levels
Gamma 3
Black White
1
1 0
Output Levels
Black
White
Input Levels
Gamma 2
Black White
1
1 0
Output Levels
Black
White
Input Levels
Gamma 1
Black White
1
1 0
Output Levels
Gamma 0
Black
White
Input Levels
Black White
Fig. 2.45 Gamma Corrections 0 through 6