Operation Manual

102
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Preferences— Advanced Color
Sample Point Size
This setting determines the size of the area sampled for the
color-value display and the white-point, gray-point, and
black-point tools. Sample point size can be set to 1 × 1, 3 × 3,
or 5 × 5 pixels. When the sample size is set to 3 × 3 or 5 × 5,
Nikon Scan averages the pixels sampled. Choosing a large
sample size reduces pre ci sion, but also minimizes the effects
of noise; choosing a small sample size has the opposite ef-
fects.
Digital DEE
Digital DEE
When inspecting color values to determine the threshold for Digital
DEE, set the sample point size to 5 × 5 pixels. Note that color values
are displayed in the “Information” palette and information panel when
an eyedropper tool is selected; be careful not to click the image when
determining the threshold for Digital DEE. If an eyedropper cursor is
selected, clicking the image could reshape the active curve.
Auto Contrast Calculations
The Auto contrast calculations option controls how
auto contrast operations in the “Curves” and “LCH Editor”
pal ettes calculate the input val ues for the white point and
black point. By default, the white point is set to a value that
excludes 0.5% of the bright est pixels in the current crop,
the black point to a value that ex cludes 0.5% of the dark est
pixels in the crop. This produces an optimal dy nam ic range,
with min i mum loss of de tail in shad ows and high lights. To
pre serve detail at the ex pense of dy nam ic range, low er the
“ex clud ed” value for auto contrast (a value of zero will set
the black and white point re spec tive ly to the dark est and
bright est pixel in the crop). To increase the dynamic range at
the ex pense of detail, raise the “excluded” value.