ITP104_Photoshop

ITP104_Photoshop - Photoshop Basics ITP 104 Internet...

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Photoshop Basics ITP 104 Internet Publishing Technologies Trina Gregory
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2 Photoshop Use Photoshop for: Editing scanned and digital photos and artwork Retouching and repairing photographs and other images Add special effects to images Create collages of images Adjust and/or add colors in images Create images/graphics from scratch
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3 Adobe Photoshop CS4 Editions Adobe Photoshop CS4 Ideal for: Professional photographers Serious amateur photographers Graphic designers Web designers Cost: Buy US$699 Upgrade from US$199 Adobe Photoshop CS4 Extended Ideal for: Film, video, and multimedia professionals Graphic and web designers using 3D and motion Manufacturing professionals Medical professionals Architects and engineers (AEC) Scientific researchers Cost: Buy US$999 Upgrade from US$349 http://www.adobe.com/products/photoshop/index.html
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Terminology Compression Methods Make your image smaller for web or email delivery Lossy • Requires data to be removed from the image to compress the file and make it smaller by trying to remove the least important data first Lossless • Opposite of lossy since no data is lost when the file is compressed Resolution Standard for web graphics is 72 dots per inch (dpi)
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Terminology Transparency Able to see through parts of an image In Photoshop, you see a gray and white checkerboard Interlacing A process where the graphic is displayed at multiple levels of clarity, from blurry to clear Noninterlaced images must be fully loaded before the browser displays them Interlaced graphics appear more quickly, first fuzzy and ultimately clear
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6 Image Formats PSD (Photoshop Document) Proprietary Photoshop file format, although many programs will read .psd files ALWAYS save a PSD version of your document even if your final version will be in another format Don’t work on websites The dithering process used to overcome the format's 256-color limitation makes the image appear coarse-grained. GIF (Graphics Interchange
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ITP104_Photoshop - Photoshop Basics ITP 104 Internet...

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