tailieunhanh - Photoshop 6 for Windows Bible- P23

Photoshop 6 for Windows Bible- P23:If you are reading this foreword, it probably means that you’ve purchased a copy of Adobe Photoshop , and for that I and the rest of the Photoshop team at Adobe thank you. If you own a previous edition of the Photoshop Bible, you probably know what to expect. If not, then get ready for an interesting trip. | Chapter 13 4 The Wonders of Blend Modes 631 If you want all layers in the clipping group to blend as a unit select the Blend Clipped Layers as Group check box it s at the bottom of the spotlighted area in Figure 13-16 . If you selected different blend modes for the individual layers in the clipping group Photoshop uses the mode applied to the base layer for all layers. To adjust blending of the base layer only deselect the check box. Now all blending options except the Opacity slider have no impact on any layer in the clipping group except the base layer. 6 Blending individual color channels Directly underneath the Fill Opacity slider the Channels check boxes enable you to blend color channels independently of each other. When you re working on a grayscale image this option is unavailable because the image has only one channel. For some examples of the creative possibilities afforded by the Channels feature see Color Plate 13-5. 6 Knocking out layers The Knockout pop-up menu is another of the blending options new to Photoshop 6. It turns the contents of the active layer into a floating hole that can bore through one or more layers. You specify how deep the hole goes using the Knockout option use Opacity and blend mode options to define the translucency of the hole. Select a Knockout option depending on what layers you want to blend together 4- None blends normally. The layer is treated as a standard layer not a hole. 4 Shallow cuts a hole through a layer set to expose the layer immediately below the layer set. In a clipping group Shallow burrows down to the base layer of the group. 4 Deep cuts all the way down to the Background layer. An exception arises when you re working with a layer in a clipping group. In that case Deep blends the layer with the base of the clipping group just like Shallow. Figure 13-18 shows examples of each of these options. In all the examples the top layer contains black text to which I applied the Outer Glow and Bevel and Emboss layer .