Univ of MD College of Arts and Humaniites: Digital Technology in the Arts and Humanities

Tour of Photoshop
(Open Madres.jpg) Menus, palettes, tool box Tab Key- hides menus Options Bar (v6.0) Working with windows: scrolling, minimizing, etc. Using Zoom Tools, navigator palette (option/magnifying glass to unzoom) Dbl click magnifying glass, dbl click hand Spacebar to get hand Spacebar + apple to get zoom tool Current Color/Background Color, fast black/white, switch current/background color Tool Options, Additional Tools Selecting Tools- 1st letter shortcut Jump to image ready (v6.0)
Cropping and Saving Images- the Big Picture
(Work with Madres.jpg, williamjohnson.jpg) 1. Open image file; *File Menu/ Open...* 2. Make necessary changes to overall picture. 3. Resize image to fit in average browser window. 4. Save image as photoshop file for archival purposes. 5. Save full-screen image as jpeg file 6. Resize image as thumbnail. 7. Use save as to save file giving it a new name.
Cropping and Saving Images- the details
1. Crop image using the crop tool (circled). 2. Click and drag to select area. Use handle bars to adjust size. 3. Hit enter/return when finished. Examples: ladies874x580.jpg ladies723x480.jpg ladies 500x332 Ladies 150x100
4. Adjust size according to use of image Image Menu> Image Size- Web Screen size: 1024x768 screen resolution: 72dpi, 980 x 580 after menus 832x624 screen resolution: 72dpi, 765 x 420 after menus 640x480 screen resolution: 72dpi, 600 x 300 after menus Powerpoint for Presentations from the Computer, Overhead Transparency or Paper Print: Print size less than 10 inches x 7 inches at 150dpi
5. Save full screen image as jpeg file File Menu > Save As > Format: JPEG, quality: medium Name: filename.jpg 6. Resize image as thumbnail. Image Menu > Image size 7. Save file giving it a new name. File Menu > Save as Format: JPEG, qulaity: medium Name: filename-tn.jpg
More on File Formats
Saving Files- JPEG vs. GIF	Graphics vs. Images
Let the content of the Image-- whether it's flat color or continuous-tone-- determine which file format you use. JPEG Format: Standard for displaying photographs and other continuous-tone images JPEG supports millions of colors File sizes are reduced with lossy compression rather than color reduction. Don't use JPEG with flat-color art, type or images with sharp, well-defined edges; compression produces artifacts. Don't resave a JPEG format again as a JPEG- the image will deteriorate with each save. Gif Format: 8 bit or less images- flat-color illustrations, logos with flat-color, and areas in any image that have a lot of a single color File sizes are reduced by limiting the number of colors. Images can be indexed to 256 colors or less; less colors means smaller file size. Don't double dither- don't select option for dithering. Use browser safe palette or fill all flat-color areas with color from the browser safe palette; browser palette will dither pixels to create color that the palette does not contain- the resulting dithering is not noticeable in edges and shadows. Flat color Illustration Test : http://www.lynda.com/products/books/dwg/flatdither.html GIF compresses by looking at each horizontal line and recording colors so files will be smaller if there is less vertical noise. Antialiased Text; various file types, example 1, example 2

Let the content of the Image-- whether it's flat color or continuous-tone-- determine which file format you use.

JPEG Format:

Gif Format: