Photoshop CS5_tập 8

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Photoshop CS5_tập 88 Changing the visibility of a layer 2 You may find it easier to use keyboard commands to move the layers’ positions in the stacking order. Select the green square layer and press Ctrl+] (right bracket) (Windows) or Command+] (right bracket) (Mac OS) to move it up one level in the stacking order. Press this keyboard combination again to move the green square layer back to the top of the stacking order. 3 Select the yellow circle layer and press Ctrl+[ (left bracket) (Windows) or Command+[ (left bracket) (Mac OS) to put the yellow circle one level down in the stacking order, essentially placing it behind the red square. Press Ctrl+] (right bracket) (Windows) or Command+] (right bracket) (Mac OS) to move it back up one level in the layer stacking order. The image layers should now be back in the same order as when the image was originally created: red square on the bottom, yellow circle in the middle, and green square on the top. 4 Choose File > Save. Keep the file open for the next part of this lesson. Changing the visibility of a layer One of the benefits of using layers is that you can hide the layers that contain pixel data on which you are not currently working. By hiding layers, you can focus on the image editing at hand, keeping distractions to a minimum. 1 With the mylayers.psd file still open, select the visibility icon ( ) to the left of the red square layer. The red square disappears. Turn the visibility of a layer off and on by selecting the visibility icon. 2 Click again on the spot where the visibility icon previously appeared. The red square layer is visible again. 3 This time, hold down the Alt (Windows) or Option (Mac OS) key, and click on the same visibility icon. By using the Alt/Option modifier, you can hide all layers except the one you click on. 4 Alt/Option+click on the same visibility icon to make all the layers visible again.226 Adobe Photoshop CS5 Digital Classroom 8 Using masks in a layerUsing masks in a layerThere is one last feature fundamental to understand before you delve further into layers: thelayer mask feature. Without the mask feature, making realistic composites or blending one imagesmoothly into another would be much more difficult.1 With the mylayers.psd file still open, choose the red square layer in the Layers panel.2 Press the Add Layer Mask button ( ) at the bottom of the Layers panel. A blank mask is added to the right of the red square layer Adding a layer mask.3 To make sure your foreground and background colors are set to the default black and white, press D on your keyboard.4 Select the Gradient tool ( ) from the Tools panel, and make sure that the Linear Gradient option is selected in the Options bar. Click and drag across the red square in the image from the left side of the square to the right. Note that some of the red square becomes transparent, while some remains visible. Click and drag with the Gradient tool as many times as you like. Note that in the Layers panel, wherever black appears in the mask thumbnail, the red square is transparent, as the mask is essentially hiding the red square from view. Select the layer mask. Click and drag using the Gradient tool across the image.5 Choose File > Save. Keep this file open for the next part of this lesson. Lesson 8, Getting to Know Layers 2278 Preserve transparency Preserve transparency The last step in this practice file will be to apply transformations to your layers. Transformations include scaling, rotating, and distorting a layer. To help illustrate how transformations work, you will first duplicate a layer and link it to the original. 1 With the mylayers.psd file still open, select the green square layer. 2 Select the Move tool ( ), ...