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    Microsoft Word:.doc Microsoft Word:.doc Document Transcript

    • Technology Training: Basic Image Editing in Photoshop CS3 Summary Workspace Overview......................................................................................................2 Getting Started.................................................................................................................3 Panels...............................................................................................................................3 Tools Palette...........................................................................................................3 Color Palette...........................................................................................................4 Layers...............................................................................................................................4 Creating Layers.......................................................................................................4 Organize Layers......................................................................................................5 Layer Styles and other Options..............................................................................5 Image Size and Resolution.............................................................................................6 Saving Images.................................................................................................................6 Image Formats........................................................................................................6 Appendix..........................................................................................................................7 Toolbox Overview...................................................................................................7 Additional Resources..............................................................................................7 The following has been adapted from the Photoshop Help Guides, which found in the Help menu and online at:http://livedocs.adobe.com/en_US/Photoshop/10.0/toc.html © 2010 Santa Clara University 1 of 7 Basic Image Editing in Photoshop v1.0 Technology Training: 554-5430 or 554-5014 www.scu.edu/training
    • Workspace Overview Options Bar Tools Palette Panels Options Bar: displays options for the currently selected tool. Tools Palette: contains tools for creating and editing images. Related tools are grouped together. To view additional tools under the same button, click and hold the drop-down arrow on the button. Panels: consist of palettes that help you monitor and modify your work, such as the Layers palette. Certain panels are displayed by default, but you can add any panel by selecting it from the Window menu. Note: If you accidentally close a palette or can’t find the tool you need, go to Window > Workspace > Reset Palette Locations
    • Getting Started To create a new document: 1. Go to File > New. 2. In the dialog box, type a name for the image. 3. Set the width and height by choosing a preset from the Size menu or entering values in the Width and Height text boxes. 4. Set the Resolution, Color Mode, and bit depth if needed. If you copied a selection to the clipboard, the image dimensions and resolution are automatically based on that image. 5. Select a canvas color option: White, Background Color (fills the background or first layer with the current background color), or Transparent (makes the first layer transparent). 6. When you finish, you can save the settings as a preset by clicking Save Preset, or you can click OK to open the new file. To open an existing image or document: 1. Choose File > Open. 2. Locate and select the file you want to open. If the file does not appear, select the option for showing all files from the ‘Files Of Type’ (Windows) or ‘Enable’ (Mac OS) pop-up menu. 3. Click Open. In some cases, a dialog box appears, letting you set format-specific options. Panels Tools Palette Among the many palette options in the panels section is the Tools palette. Some of the commonly used tools include Move , Rectangular marquee , Lasso , Crop , Eraser , Red eye , Brush , Paint bucket , Horizontal Type , Line , Eyedropper , and Zoom . Clicking on the small black arrow at the bottom right corner of a button displays even more button options. If you cannot find a tool, it may be hidden under the black arrow. Remember to check the Options bar at the top of the window for additional controls for the currently selected tool. See page 7 under ‘Additional Resources’ in the handout for a complete tools list.
    • Color Palette The Color palette displays the color values for the current foreground and background colors. Using the sliders in the Color palette, you can change the foreground and background colors. You can also choose a foreground or background color from the spectrum of colors displayed in the color ramp at the bottom of the Color palette palette. A. Foreground color B. Background color C. Slider D. Color ramp To select a color from an image, use the Eyedropper tool Layers Layers are like sheets of stacked acetate. You can see through transparent areas of a layer to the layers below. In the Layers palette, the layer at the top of the list is the first layer. Layers are useful for compositing multiple images, adding text to an image, or adding vector graphic shapes. You can move layers around a document, change the opacity of a layer to make content partially transparent, or apply a layer style to add a special Transparent areas on a layer let you see layers below. effect such as a drop shadow or a glow. Creating Layers When you open an image in Photoshop, or paste an image in a Photoshop document, it exists on its own layer. When you create a text box or vector graphic shape, a new layer is also automatically created. To create a new, empty layer: 1. Click the Create a new layer button on the Layers panels or: a. Go to Layer > New > Layer on the menu. 2. Rename the layer by double-clicking the name. To copy an existing layer, do one of the following: a. In the Layer palette, drag the layer to the Create new layer button.
    • b. Select the layer and go to Layer > Duplicate layer… Note: When you open a JPEG image or other image, the default layer is called the Background. The background layer (shown in italics) has limited editing capabilities. To convert it into a regular layer, go to Layer > New > Layer From Background, or drag the background layer to the Create a new layer button. Organize Layers To change the order of a layer, simply drag it above or below other layers in the Layer palette. Click on the eye on the layers palette to show or hide a layer from view. Unless you change the opacity, the topmost layer is the layer that is visible. Before you begin to edit your image, it is a good idea to create a copy of it that you can return to if needed. As you make changes, you can create additional copies for each major step you complete. Layer Styles and other Options Photoshop provides a variety of effects—such as shadows, glows, and bevels—that change the appearance of a layer’s contents. When you move or edit the contents of the layer, the same effects are applied to the modified contents. For example, if you apply a drop shadow to a text layer and then add new text, the shadow is added automatically to the new text. To create a Layer Style: A. Layer effects icon B. Click to expand and show layer effects C. Layer effects • Go to Layer > Layer Style and choose one of the options, such as Drop Shadow. In the Layers Palette, you can also change the blending mode of the layer—how the layer will blend with the layer beneath it. By default, a layer’s blending mode is ‘Normal’, but it can be changed to darken the layer below, intensify the color, and more. You can also change a layer’s opacity or fill percentage to make the content more or less transparent.
    • Image Size and Resolution To resize an image, go to Image > Image Size. When working with images, pay attention to pixel dimensions, resolution, and file size. The dimensions are the number of pixels along an image’s width and height. Resolution is the detail in an image and is measured in pixels per inch (ppi). The more pixels per inch, the greater the resolution, and the larger the file size. Generally, an image with a higher resolution produces a better printed image quality. The following is a good guide for sizing an image that is wider than it is tall: Format Dimensions ppi File size Web thumbnail 150x100 72 ppi 44-70k Web image 360x216 72-96 ppi 230k-405k 3x5 print 1000x600 200 ppi 1.72MB Desktop wallpaper 1024x768 72 ppi 2.3MB Saving Images If you want to continue to work on an image, it is best to save your work as a Photoshop file (.psd), to preserve your layers and special effects. When you are finished and want to export your image, go to the File menu and choose one of the following: Save As: Saves an image in a different location or under another filename. The Save As command lets you save an image in a different format and with different options. Read on to learn more about image formats. Save For Web & Devices: Save an optimized image (especially animated) for the web. Image Formats Photoshop supports a variety of different image formats. The four you are likely to use are BMP, (CompuServ) GIF, JPEG, and PNG. BMP (Bitmap): BMPs are the standard image format in Windows (such as wallpaper). They tend to be large files, but have high quality. BMPs cannot have transparent areas. GIF (Graphics Interchange Format): GIF format is best for text, line drawings, screenshots, animations, and other graphics with few colors. GIFs can only have up to 256 colors. It is best used for web images and can have transparent areas. JPG/JPEG (Joint Photographic Experts Group): JPEG is used for photographs, or any pictures with lots of color detail. It is not good with sharp edges. JPEGs can have up to 16 million colors. JPEGs cannot be animated or have transparent areas. PNG (Portable Networks Graphic): PNG does not lose quality with compression, unlike standard JPEGs (even at its highest settings). PNGs are better for clipart and graphics with few colors, or large blocks of color. They cannot be animated, but can have transparent areas.
    • Appendix Toolbox Overview Additional Resources A great resource for learning Photoshop is the Photoshop Help guides, located in Help menu. Here are some other places to take a look at: • Which Graphics File Format Is Best To Use When? http://graphicssoft.about.com/od/graphicformats/f/summary.htm • Photoshop Tips & Tricks: http://www.graphic-design.com/Photoshop/tutorials/auto_levels.html • Photoshop911.com: http://www.photoshop911.com/index.html • NYFalls.com PhotoShop Tutorials: http://www.nyfalls.com/articles.html