Nikon 25338 User Manual - Page 152
move the Black and White Point Sliders, By dragging the Black Output Slider up
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Adjust Menu Chapter 22 146 darkest value that can be displayed in a digital file. White Point Slider Move the White Point Slider to the left to set all luminosity values from the point and to the right to complete white, 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 white point slider all the way to the left to match up with the rightmost information from the displayed histogram. This adjusts the current image so that the lightest values in the image match the lightest value that can be displayed in a digital file. Mid Point Slider Move the Mid Point Slider either to the left or to the right to lighten or darken the mid-tones of the image. You may also click directly on the Luminosity Curve to add an anchor point that can be moved and adjusted. By increasing the slope of the curve, you will increase the contrast in the image. Decreasing the slope of the curve will decrease the contrast in the image. The anchor points may also be set to minimize the amount of change that occurs to a tonal range of the image. Anchor points can be removed by simply clicking and dragging the anchor point outside of the Luminosity Histogram. The Master Lightness editor contains a number of additional controls: Black and White output sliders The Black and White output sliders enable you to set the maximum and minimum brightness levels of the image. By dragging the Black Output Slider up, you lighten the darkest luminosity level in the image, and by dragging the White Output Slider down, you darken the lightest luminosity level in the image. These two sliders are often used if the darkest and lightest colors should not be black and white. Show Before / After Histogram Button This button toggles back and forth between Before and After Histograms. The Before Histogram always remains the same and represents the Histogram before any adjustments have been made on the image by the Master Lightness editor. The After Histogram always updates itself, based on the changes made by the Master Lightness editor. Auto Contrast Button Click on this button to automatically move the Black and White Point Sliders to match the darkest and lightest values of the luminosity histogram. Set Anchor Point Click on this button and then click on the active image to select a color to place an anchor point on the Luminosity Curve. Reset Current Channel Click on this button to reset only the Master Lightness editor to the default
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