Nikon 25338 User Manual - Page 138

Edit Menu Chapter 21 132 BLACK AUTO-CONTRAST CLIP Set this number to determine the percentage of the darkest pixels to exclude when using the Black Point Dropper within the Levels & Curves dialog. WHITE AUTO-CONTRAST CLIP Set this number to determine the percentage of the lightest pixels to exclude when using the White Point Dropper within the Levels & Curves dialog. DROPPER SIZE SAMPLE Use this option to set the sample size of the droppers within the Levels & Curves dialog. Point Sample The Point Sample option samples only a single pixel. This is helpful if you want to be very precise when selecting a color and are able to target a pixel of a specific color. 3x3 Average The 3 × 3 Average option samples a total of nine pixels in a grid of three pixels by three pixels and averages the colors of each pixel before displaying the result. Since areas within a photograph are generally made up of small variations of color, selecting this option provides a more accurate rendition of the color of the targeted area. the colors of each pixel before displaying the result. This option is recommended for higher resolution images. COLOR Click on the color patch to bring up the Color Picker and select the color for the gridlines when the Show Grid option is enabled. See page 196 for more information about the Show Grid option. GRIDLINE EVERY Use this option to set the frequency and the unit of the frequency of the gridlines when the Show Grid option is enabled. See page 196 for more information about the Show Grid option. SUBDIVISIONS PER LINE This option enables you to set subdivisions, or smaller gridlines, that are displayed between the major gridlines defined by the Gridline Every preference. 5x5 Average The 5 × 5 Average option samples a total of twenty-five pixels in a grid of five pixels by five pixels and averages