Adobe 65089063 User Guide - Page 192
Editing adjustment layers or fill layers, Choose Layer > Change Layer Content
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184 CHAPTER 8 Using Layers Threshold Specify a threshold level. (See "Using the Threshold command" on page 96.) Posterize Specify the number of tonal levels for each color channel. (See "Using the Posterize command" on page 97.) Editing adjustment layers or fill layers Once you create an adjustment or fill layer, you can easily edit the settings, or dynamically replace it with a different adjustment or fill type. You can also edit the mask of an adjustment layer or fill layer. A layer mask protects sections of a layer (or the entire layer) from being edited and can be used to show or hide sections of an image. When the layer mask is attached to an adjustment or fill layer, it is used to control the effect that the layer has on the image. By default, all areas of an adjustment or fill layer are "unmasked" and, therefore, are showing. The layer mask is a grayscale image, so what you paint in black will be hidden, what you paint in white will show, and what you paint in gray shades will show in various levels of transparency. Masks can be edited like a grayscale image. Adjustment layer with triangular mask added To edit an adjustment or fill layer: 1 Do one of the following: • Double-click the adjustment or fill layer's thumbnail in the Layers palette. • Choose Layer > Layer Content Options. 2 Make the desired adjustments, and click OK. Note: Inverted adjustment layers do not have editable settings. To change the content of an adjustment or fill layer: 1 Select the adjustment layer or fill layer that you want to change. 2 Choose Layer > Change Layer Content and select a different fill or adjustment layer from the list. To edit the layer mask for an adjustment or fill layer: 1 Select the adjustment layer or fill layer in the Layers palette. 2 Select any painting or editing tool. 3 Use the following methods to view the layer mask: • Alt-click (Windows) or Option-click (Mac OS) the adjustment layer thumbnail to view only the grayscale mask. Alt/Option-click the thumbnail again to redisplay the other layers. • Hold down Alt+Shift (Windows) or Option+Shift (Mac OS), and click the adjustment layer thumbnail to view the mask in a rubylith masking color. Hold down Alt/Option+Shift and click the thumbnail again to turn off the rubylith display.