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Photoshop cs5 by steve Johnson part 23

Làm việc với các Điều chỉnh Layers, Bộ lọc, và công cụ Nếu bạn muốn kiểm soát trực quan là một tài liệu Adobe Photoshop, sau đó lớp điều chỉnh là công cụ cuối cùng. Mục đích của một lớp điều chỉnh được thể hiện như thế nào điều chỉnh cụ thể, chẳng hạn như Huế & Saturation, thay đổi sự xuất hiện của hình ảnh. Từ khi điều chỉnh được chứa trong một lớp riêng biệt, các hình ảnh ban đầu không bao giờ thay đổi. . | Working with Adjustment Layers Filters and Tools 7 Introduction What You ll Do If you want to visually control an Adobe Photoshop document then adjustment layers are the ultimate tool. The purpose of an adjustment layer is to show how a specific adjustment such as Hue Saturation changes the appearance of the image. Since the adjustment is contained within a separate layer the original image never changes. This gives you the ability to experiment with different settings. Since adjustment layers can be saved with the document you can close the document then return at a later time to make further adjustments. Another advantage of adjustment layers is size. Adjustment layers do not increase the size of a Photoshop document. Most Photoshop layers are composed of pixels so adding traditional layers to a document increases the size of the file. Since adjustment layers are simply a set of mathematical data they do not increase the size of the file. Photoshop has two ways to apply adjustments to an image. You could go to the Image menu and choose Adjustments however when you apply an adjustment using this method it s permanent. The other way is to use an adjustment layer the very definition of control over time. When working with adjustment layers you can modify merge or even create a temporary composite image all while your original image stays intact. With all of their advantages you may never perform adjustments using the Image menu again. In addition to letting you apply adjustments to an image without changing the original data adjustment layers because they are separate layers give you the ability to apply standard layer controls such as blending modes opacity and fill. Adjustment layers come with their own built-in masks and allow you to control how and where the adjustment is applied to the image. Create an Adjustment Layer Modify an Adjustment Layer Merge Adjustment Layers Create a Temporary Composite Image Control Adjustment Layers with Clipping Groups Delete an .