Color; Lch - Nikon 25338 User Manual

Color

LCH

The LCH Editor enables you to individu-
ally control the Luminosity, the Color
Lightness, Chroma, and Hue of the
active image using individual editor
dialogs.
From the Editor pull-down Menu, select
the first aspect of the current image
that you want to edit. Choose from
Master Lightness, Color Lightness,
Chroma, and Hue.
: You can access each of these
Hint
different Editors quickly by using the
following keyboard shortcuts:
Master Lightness Editor
(Windows) Command + ~ (Mac OS)
Color Lightness Editor
(Windows) Command + 1 (Mac OS)
Chroma Editor : Ctrl + 2 (Windows)
Command + 2 (Mac OS)
: Ctrl + 3 (Windows)
Hue Editor
Command + 3 (Mac OS)
MASTER LIGHTNESS
The Master Lightness Editor is similar to
a Levels & Curves dialog, but it affects
only the lightness of the image without
affecting the color. This is a great way
to affect the tonality of your image
without introducing unwanted color
casts.
Within this editor, you are presented with
a histogram that represents the total
luminosity values within your image. A
Luminosity Curve superimposed above
: Ctrl + ~
: Ctrl + 1
this Luminosity Histogram enables you to
control the relationship of input luminos-
ity values to output luminosity values.
The Luminosity Histogram represents
a bar graph of the total number of
pixels that appear at different levels of
luminosity. The horizontal axis repre-
sents the luminosity level, while the
vertical axis represents the number of
pixels at each luminosity level found
within the current image. The left side
of the horizontal axis represents the
darkest tones of your image, while the
right side represents the lightest tones
in the image. The histogram is very
helpful in determining how to adjust
the settings within the Master Lightness
editor.
You can begin to modify the lightness
of your image by either moving the
Black, White, and Mid Point Sliders or
by editing the Luminosity Curve directly.
Adjusting the Black, White, and Mid Point
will automatically adjust the
Sliders
Luminosity Curve for you.
Black Point Slider
Move the Black Point Slider to the right
to set all luminosity values from the
point and to the left to complete black,
while redistributing all of the values to
stretch the luminosity range to match
the entire possible range of values. It is
recommended that you move the Black
Point Slider all the way to the right to
match up with the left-most informa-
tion from the displayed histogram. This
adjusts the current image so that the
darkest values in the image match the
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