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190 Chapter 20 — Adjust Menu | Color > LCH
The LCH tool provides four different channels, each channel providing controls unique to that method. Use
the channel pull-down menu to select which channel to use. The available channels are:
Master Lightness
The Master Lightness channel is similar to the Levels & Curves tool, but it affects only the lightness of the
image without affecting the color. This is a great way to affect the tonality for your image without
introducing unwanted color casts.
3
Click directly on the curve for the selected channel to add an anchor point that can be moved and
adjusted. Depending on the channel selected, the adjustments made to the curve will have
different effects on the image.
4
After making adjustments to the first channel, you
may make additional adjustments by selecting
another option from the channel pull-down menu.
The enhancements made within each editor will
remain, enabling you to make adjustments to
different channels within the same LCH
enhancement.
Shortcut
(while a LCH step is active):
Ctrl + ~ (Windows)
command + ~ (Macintosh)