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Chapter 10. Color Manipulation > Color to Grayscale

Color to Grayscale

If you want to get much more control over your color-to-grayscale conversions, then you might want to think about using Hue/Saturation. A lot of people will suggest using the Channel Mixer or other techniques, but the problem with most approaches is that they force you to think like Photoshop instead of giving you an intuitive approach. To convert to black and white with Hue/Saturation, create an adjustment layer and then move the Saturation slider all the way to the left (Figures 10.24 and 10.25). Then, to control what happened to the colors in your image, turn the Preview check box off and then on again, and decide which color area needs to be tweaked (areas that used to be yellow might need to be brighter, for example). Next, make sure the Preview check box is turned on, pick the color that needs to be adjusted from the Edit pop-up menu, and then adjust the Lightness slider until it looks good (Figure 10.26). Repeat this process for any other colors that need tweaking until your image looks great (Figure 10.27). If you'd like to start with those same settings in the future, make sure to do all the adjustments as part of a single adjustment layer, and then click the Save button in the upper right of the Hue/Saturation dialog box and give that setting a name. Then the next time you want to apply those same settings to convert an image to grayscale, just add a Hue/Saturation adjustment layer, click the Load button, and point to the file you saved earlier.

Figure 10.24. Original image. (©2005 Stockbyte, www.stockbyte.com)



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