Adjusting The Gradation Of Photos [Tone Curve]; Adjusting The Contrast Of The Original [Contrast] - Riso SF Series User Manual

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Chapter 3 Functions for Master Making
Adjusting the Gradation of Photos
[Tone Curve]
You can adjust the tone of the bright parts and dark
parts in a photo in incremental levels.
B[Tone Curve] can only be selected when a
setting other than [Line] is specified for
[Image]
1
Touch [Tone Curve] in the [Func-
tions] tab screen.
2
Touch a target setting button.
■ [Lights]
You can adjust the expression of the bright
parts in the photo.
Setting
[+1]
[0]
[-1]
■ [Shadows]
You can adjust the expression of the dark parts
in the photo.
Setting
[+1]
[0]
[-1]
3
Touch [OK].
(A 51).
Description
Reduces the range that is
expressed in bright colors.
The fine parts within the bright
range becomes more visible.
Applies standard processing.
Enlarges the range that is
expressed in bright colors.
Some fine parts within the bright
range may not be visible.
Description
Enlarges the range that is
expressed in dark colors.
Some fine parts within the dark
range may be blurred.
Applies standard processing.
Reduces the range that is
expressed in dark colors.
The fine parts within the dark
range becomes more visible.
Adjusting the Contrast of the
Original [Contrast]
You can adjust the contrast according to the condi-
tions such as the paper color and the tint of the orig-
inal.
BYou can change the default setting in
[Scanning Contrast]
[Admin.].
BThe [Contrast] setting cannot be changed
when [Ink Saving]
1
Touch [Contrast] in the [Basic] tab
screen.
2
Touch a target setting button.
■ [Auto]
You can select this button only when [Line] is
selected in [Image]
When you select [Auto], the contrast is
adjusted optimally according to the paper color
of the original.
■ [1] to [5]
You can adjust the scanning density in five lev-
els.
Select [1] for the lowest density.
Select [5] for the highest density.
3
Touch [OK].
(A 118) under
(A 56) is turned on.
(A 51).