Nikon 25385 User Manual - Page 154
Channels, Double Threshold, Green, Shadows, Highlights
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This "Histogram" section provides you with the following controls: q w e q Channels The channels pull-down menu enables you to select the channel you wish to have displayed within the "Histogram" section. The following channel options are available: RGB The RGB option displays the red, green, and blue histograms, superimposed over one another. Where the individual histograms overlap, secondary colors are displayed. Areas that are white contain pixel values of all three colors at that value. Red The Red option displays only the red channel within the histogram window. Green The Green option displays only the green channel within the histogram window. Blue The Blue option displays only the blue channel within the histogram window. w Double Threshold The Double Threshold option enables you to determine the darkest and lightest colors within the current image. By turning this option on, two additional sliders will be added to the bottom of the Histogram display and the entire image will become neutral gray. The left-hand slider is the Shadows slider while the right-hand slider is the Highlights slider. By dragging the Shadows and Highlights sliders towards the center of the histogram window, you will begin displaying pixel values within the image. Black pixels represent the darkest pixels in the image while white pixels represent the lightest pixels in the image. 152 Chapter 16 - Photo Info | Histogram
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