Issue link: https://nbm.uberflip.com/i/1451382
A W A R D S & C U S T O M I Z A T I O N T H E D I G I T A L E Y E NEUTRALITY All neutral colors have identical RGB values. A neutral color consists of equal values of red, green, and blue and appears as black, white, or gray (Fig. 4). By sam- pling a specific highlight area of an image and mapping a light gray color to it, the colorcast of the entire image will magi- cally disappear. First, choose the Color Sampler tool. In the Options bar, set sample size to 5 By 5 Average. e Info panel is displayed show- ing the RGB values of the current point where the curser is positioned. (Fig. 5) Drag over the image to locate the light- est area on the image. As you drag, the Info panel displays high numbers in the light areas and low numbers in the dark areas. Observe the panel to see the high- est RGB values of the sample point. Do not choose a specular highlight (Red 255, Green 255, Blue 255) because it is pure white and cannot be easily modi- fied. Instead, choose the lightest area that contains detail and click to deposit sam- ple point #1. In the example shown here, (Fig. 6A), I chose a gray f loor tile as the sample point. The red value is 210, the green value is 224 and the blue value is 223 indicating that there is a deficiency of red that results in a cyan-blue colorcast. In the Adjustments panel, click the Color Balance icon to display the color balance sliders in the Properties panel. Choose the Midtone option from the Tone menu. Drag the cyan/red slider to the right to add red. As you drag, the image becomes warmer. Drag until the red value in the Info panel reads 218. By dragging the red slider, you'll notice that the green and blue values have decreased. Drag the magenta/ green slider to the right until the green value reads 218. Ditto with the yellow/ blue sliders so that all three values in the Info panel are identical as in (Fig. 6B) and the colorcast is eliminated. 6 4 G R A P H I C S P R O • S E P T E M B E R 2 0 2 2 G R A P H I C S - P R O. C O M A neutral color consists of equal values of red, green, and blue and appears as black, white, or gray 4 5 The Info panel is displayed showing the RGB values of the current point where the curser is positioned.