Nikon 25338 User Manual - Page 151

Color LCH The LCH Editor enables you to individually 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. Hint: You can access each of these different Editors quickly by using the following keyboard shortcuts: Master Lightness Editor: Ctrl + ~ (Windows) Command + ~ (Mac OS) Color Lightness Editor: Ctrl + 1 (Windows) Command + 1 (Mac OS) Chroma Editor: Ctrl + 2 (Windows) Command + 2 (Mac OS) Hue Editor: Ctrl + 3 (Windows) 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 145 this Luminosity Histogram enables you to control the relationship of input luminosity 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 represents 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 Sliders will automatically adjust the 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 information from the displayed histogram. This adjusts the current image so that the darkest values in the image match the Adjust Menu Chapter 22