User manual ACDSEE CANVAS 11

[. . . ] C A N V A S USER'S GUIDE Notice of Liability The information in this manual is distributed on an "As Is" basis, without any representation or warranty of any kind whether express or implied, including any implied warranty of merchantability, title or fitness for a particular purpose or use. While every precaution was taken in the preparation of this manual, neither the author nor ACD Systems of America, Inc. shall have any liability to any person or entity with respect to any loss or damage caused or alleged to have been caused directly or indirectly in connection with the use or inability to use the instructions contained in this manual. ACD Systems reserves the right to make changes to this manual without notice. Trademarks and Copyrights Canvas Software was designed, programmed and is Copyright © 1985-2007 ACD Systems of America, Inc. [. . . ] The intersection of the crosshair is the center of the current brush (see "Pointer display" on page 22. 21). Changes the pointer to an outline of the current brush (see "Pointer display" on page 22. 21). Displays/hides pixels as individual tiles in a grid at high magnifications (see "Fat Bits" on page 22. 21). Displays or hides transparent sections of an image while in edit mode. Brush Size Pointer Show/Hide Fat Bits Show/Hide Transparency Preview Pointer display Changing the pointer using the context menu is the same as changing the pointer in the Painting manager located in the Configuration Center. Tip The default pointer for painting is a symbol of the selected painting tool. All painting tools use the pointer you select, not just the current painting tool. Fat Bits When you choose Show Fat Bits, the resolution and magnification affect the display. Fat Bits are visible when the magnification-to-resolution ratio is about eight to one; e. g. , if the image resolution is 72 ppi, fat bits appear at 600% magnification and higher. If the image resolution is 144 ppi, fat bits appear at 1, 200% magnification. · To show fat bits: Press the Plus key or choose Show Fat Bits in the context menu to display pixels as individual tiles in a grid. · To hide fat bits: Press the Plus key or choose Hide Fat Bits in the context menu to display pixels without the grid of individual tiles. Adding visibility masks to images If a paint object has a visibility mask, you can erase to a clear background. Also, Canvas can protect transparent areas when you paint or edit in the image. Adding visibility masks to images 22. 21 You can add a visibility mask to a paint object that was created with an opaque background in Canvas or imported from another application. Paint objects can look the same whether they have visibility masks or not. However, a visibility mask changes the way that the Eraser tool works and the effect of deleting or moving a selection (see "Painting in the background color with the Eraser tool, " page 22. 8). In a paint object that has a visibility mask, you can erase or delete pixels to reveal a clear background; e. g. , you can erase at the edge of an image to create faded or torn edges. If a paint object does not have a visibility mask, areas where you drag the Eraser tool and selections you delete or move, become filled with the current background color and are opaque, not transparent. White areas of the fish image erased to a clear background When you create paint objects with painting tools or the Render or Create commands, you can select an option to include visibility masks. To add a visibility mask 1 Select a paint object that does not have a visibility mask. 2 Choose Image > Add Visibility Mask. This command is not available if a Duotone, Indexed, or Multichannel image is selected. Adding a visibility mask does not change the appearance of a paint object; e. g. , white pixels do not become transparent. When a paint object has a visibility mask, you can select Preserve Visibility in the Channels palette. When this option is selected, Canvas protects clear areas from the effects of painting and image editing. A visibility mask is applied to the object, and the white pixels become transparent. 22. 22 PAINTING & IMAGE-EDITING Paint object backgrounds You can create a paint object in which the image "background" is transparent or opaque. If the pixels are white and the paint object is on a white background, you won't notice that the image is opaque. A transparent paint object can have a clear background that does not block other objects (B). Painting in a transparent image is like painting on a window. A rectangle and text are blocked by an opaque paint object in front A transparent background lets objects show through it Rendering objects and images Rendering converts objects into paint objects; e. g. , you can use the Render command to create a paint object from text, and then use the Airbrush tool to paint highlights on the image of the text. Rendering is also referred to as "rasterizing" because the process produces a raster image -- an image composed of pixels arranged in a grid. [. . . ] 5. 1 raw image export options dialog box 38. 3 raw image import options dialog box 38. 4 Rectangle Redline tool. . . . . . . . . . . . . 16. 26, 20. 3, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23. 3, 23. 8 remove wrap command. . . . . . . . . . . . . 22. 23­22. 24 render command 22. 23­22. 24 render image dialog box 22. 25 selected areas. 12. 23 repeating actions see undo command repel options command . . . . . . . . . . . . . [. . . ]