Selecting all pixels in an image You can apply painting tools and filters to an entire image without first making a selection. But you can also select all the pixels in an image when you want to work with them as a selection. To select all pixels, with a paint object in edit mode, choose Image > Select > All. A selection border appears around the entire image. Using selection tools You can use the Marquee, Oval Marquee, Row Selection, Column Selection, and Lasso tools to select areas in images. The Marquee tool selects rectangular areas. The Oval Marquee tool selects oval areas. The Column Selection tool selects a single vertical column of pixels. The Row Selection tool selects a single horizontal row of pixels. The Lasso tools selects odd-shaped areas. The Marquee, Oval Marquee, Row Selection, and Column Selection tools are located in a toolbar that pops out from the Painting toolbar. The Lasso tools are separate icons in the Painting toolbar.     These selection tools let you select any part of an image, from one pixel to all the pixels in the image. By using modifier keys with these tools, you can add to and subtract from selections, and select the overlapping area of two selections. By subtracting a circle from a larger circle, for example, you can make a ring-shaped selection with an unselected area inside. See “Modifying selections” at the end of this section. To select rectangular or oval areas 1 Select the Marquee tool or the Oval Marquee tool. If the paint object isn’t in edit mode, click it. 2 Drag diagonally in the image; a selection rectangle or oval expands as you drag away from the starting point. When you release the mouse button, a dashed border outlines the selected area. To make a square selection:  If no selection exists, press Shift and drag the Marquee tool in an image. If a selection exists in the image, pressing Shift adds to the selection. To make a circular selection:  If no selection exists, press Shift and drag the Oval Marquee tool in an image. If a selection exists in the image, pressing Shift adds to the selection. A B    C     D A Marquee B Oval Marquee C Row Selection D Column Selection
Canvas 8 Help: Selections and channels (2 of 32)                                                    Page #652