TAILIEUCHUNG - Tài liệu Photoshop cs5 by Dayley part 39

Công cụ Magic Wand Lồng nhau với các công cụ Quick Selection là công cụ Magic Wand. Các công cụ Magic Wand tạo ra một vùng chọn bằng cách nhắm mục tiêu các khu vực có cùng màu. Sử dụng công cụ này nếu khu vực bạn muốn chọn là tất cả một màu tương tự hoặc màu sắc. Điều này làm việc tốt nhất, tất nhiên, nếu các lĩnh vực mà bạn không muốn chọn được một màu sắc tương phản. | Part III Selections Layers and Channels 4. Use the Add to Selection and Subtract from Selection tools to fine-tune your selection. Zoom in on hard-to-define areas and reduce your brush size to make the smaller selections. If you select too much use the Subtract from Selection to take the extra area out. That is the beginning of creating a selection with the Quick Selection tool. From beginning to end it took less than five minutes to select the boy off the background of the sample image. Magic Wand tool Nested with the Quick Selection tool is the Magic Wand tool. The Magic Wand tool creates a selection by targeting areas that are the same color. Use this tool if the area you want to select is all a similar color or colors. This works best of course if the areas that you don t want selected are a contrasting color. Magic Wand tool options Before using the Magic Wand tool you should familiarize yourself with the options displayed above the document window in the Options bar as shown in Figure . Familiarizing yourself with these options before you use the tool helps you to get the most out of this tool s capability. FIGURE The Options for the Magic Wand tool Tool presets New Add Subtract and Intersect Tool presets You can save and retrieve your favorite tool settings using this drop-down list. Click the little black arrow to see a menu of available options. New selection When this option is highlighted every time you drag the selection brush you create a new selection and the old selection disappears. Add to selection With this option highlighted everything you select is added to the current selection. This makes it easy to do the detail work after the initial selection is made. Subtract from selection With this option highlighted you can subtract areas from the current selection. Intersect with selection This option selects only those areas that were in the first selection you made as well as the second and deselects anything that was selected only once. .

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