CS4624 Photoshop

See Video 4702, " Adobe Photoshop", a 1 videocassette training program, for in-depth coverage, on reserve in the Library's Media Center.

Note that Adobe Photoshop Limited Edition is part of Audition, for those interested in buying a copy.

See details on Adobe's home page for it.

One can:

• Retouch a Scanned Image;
• Scan, Import, and Export Images;
• Use Paint and Editing Tool Options;
• Use the Type Tool;
• Make Selections;
• Use the Fill Tools;
• Select Colors;
• Paste Selections;
• Manipulate Images;
• Resize Images;
• Convert Images;
• Make Color Corrections;
• Modify Images with Filters;
• Print; and
• Calibrate.

To Retouch a Scanned Image:

• Select the Image/Adjust/Variations submenu;
• In sequence, use Midtones, Shadows, Highlights and then Saturation;
• For each aspect, vary the control from Fine to Coarse depending on severity of correction needed;
• Save new versions and repeat the process till a proper looking image results.

For more precise color correction:

• Choose Show Info from the Window menu to display the Info palette;
• Select the Image/Adjust/Levels submenu;
• Select Preview;
• Click the white point (right) eyedropper;
• Use Command-space and then click on a region of image with white to magnify;
• Read off from Info when find whitest and then click;
• Undo by holding Option and then Reset if err;
• Zoom out with Option-Command-space;
• Repeat with the black dropper;
• Adjust Gamma by moving the middle of the triangles of the top slider, for the Levels histogram, to right of the densest region;
• Click OK to fix lighting;
• Select Image/Adjust/Color Balance and click on Preview;
• Adjust each of the 3 colors as needed and click OK;
• Crop any unwanted border using Tool Bar, left, 3rd down crop tool and clicking in center when done;
• Select Image/Image Size and adjust as needed;
• Save As the result.

If the image size is not proper, one can interpolate. Choose File/Preferences/General and pick Bicubic for best quality.

Color Corrections are made using Image/Adjust and the various submenus given. Try the Auto settings first. The finest control is with Image/Adjust/Curves. With that, the pencil choice at the bottom gives most control. Now consider again key aspects of color correction. For specifying the number of gray levels use Image/Map/Posterize. For equalizing brightness values use Image/Map/Equalize.