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Chapter 7. Working with Adjustment Layer... > Using Blending Modes and Opacity wit...

Using Blending Modes and Opacity with Layers

Adjustment layers perform two functions—they adjust the image and they give you control. Since an adjustment is held in a separate layer, you have the advantage of isolating the adjustment, and all the options that apply to normal a layer. Combine that with an adjustment layers ability to manipulate pixel information and you have a very powerful image-editing tool. Blending Modes change how two or more layers interact. For example, the multiply blending mode instructs Photoshop to mix the pixels of two or more layers, thus creating an entirely new image from the mix. With that in mind, the five modes that produce the most stunning results are Multiply, Screen, Hard Mix, Difference, and Exclusion. The opacity of an adjustment layer controls the intensity of the selected adjustment. You can reduce the opacity of the Hue & Saturation adjustment to 50 percent, and it would reduce its effect on the image. Since each adjustment layer has its own opacity settings, multiple adjustment layers can be fine-tuned to create the desired impact on the image.


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