Photoshop Tools


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Photoshop Tools

  1. 1. The marquee tools make rectangular, elliptical, single row, & single column selections. The lasso tools make freehand, polygonal (straightedged), and magnetic (snapto) selections. Move tool moves selections, layers, & guides. The Quick Selection tool lets you quickly “paint” a selection using an adjustable round brush tip The Magic Wand tool selects similarly colored areas.
  2. 2. The Spot Healing Brush tool removes defects and objects. The Patch tool repairs imperfections in a selected area using a sample or pattern. The Red Eye tool removes the red reflection caused by a flash. Healing Brush tool paints with a sample or pattern to repair imperfections The Clone Stamp tool paints with a smple of an image.
  3. 3. The Pattern Stamp tool The Eraser tool erases pixels The Background Eraser tool paints with part of an & restores parts of an image erases areas to transparency image as a pattern. to a previously saved state. by dragging. The Magic Eraser tool erases solid-colored areas The Blur tool blurs hard edges in an image. to transparency with a single click. The Sharpen tool sharpens soft edges in an image.
  4. 4. The Smudge tool distort data in an image. The Sponge tool changes the color saturation of an area. The Dodge tool lightens areas in an image. The Burn tool darkens areas in an image.
  5. 5. The Crop tool trims images. The Slice tool creates slices. The Slice Select tool selects slices.
  6. 6. Colors and Color Models • Primary Colors: • Additive primaries are the three colors of light (red, green, and blue) that produce all the colors.
  7. 7. Colors and Color Models • Secondary Colors: • Subtractive colors are pigments, found by mixing primaries. Unlike monitors, printers use subtractive colors (cyan, magenta, yellow, and black pigments) to produce colors
  8. 8. Colors and Color Models • Color Wheel: • Color wheel shows how a change in one color component affects other colors and also how changes translate between RGB and CMYK color models.
  9. 9. Color models, spaces, and modes • A color model describes the colors we see and work with in digital images. • Each color model, such as RGB, CMYK, or HSB, represents a different method (usually numbers) for describing color.
  10. 10. Color Space • A color space is a variant (alternative) of a color model and has a specific gamut (range) of colors. • For example, within the RGB color model are a number of color spaces: Adobe RGB, sRGB, ProPhoto RGB, and so on. • Each device, like your monitor or printer, has its own color space and can only reproduce colors in its gamut (range).
  11. 11. Color Mode • color mode determines which color method is used to display and print the image. 1. RGB Color mode 2. CMYK Color mode 3. Lab Color mode 4. Grayscale mode 5. Bitmap mode 6. Duotone mode 7. Indexed Color mode 8. Multichannel mode
  12. 12. 1. RGB Color mode • RGB images use three colors, or channels, to reproduce colors on-screen. • In 8-bits-per-channel images, the intensity values range from 0 (black) to 255 (white) for each of the RGB (red, green, blue) components in a color image. • In 8-bits-per-channel images, the three channels translate to 24 (8 bits x 3 channels) bits of color information per pixel.
  13. 13. 2. CMYK Color mode • In the CMYK mode, each pixel is assigned a percentage value for each of the process inks C,M,Y,K. • The lightest (highlight) colors are assigned small percentages of process ink colors; • The darker (shadow) colors higher percentages. • CMYK Model is mainly used for printing. • Converting an RGB image into CMYK creates a color separation.
  14. 14. 3. LAB Color mode • • • L*a*b* color model (Lab) is based on the human perception of color. Lab is a device-independent color model. The Lab Color mode has 1. A lightness component (L) that can range from 0 to 100. In the Adobe Color Picker and Color palette, 2. The a component (green-red axis) and 3. The b component (blue-yellow axis) can range from +127 to –128.
  15. 15. 4. Grayscale Color mode • • • • Grayscale mode uses different shades of gray in an image. In 8-bit images, there can be up to 256 shades of gray. Every pixel of a grayscale image has a brightness value ranging from 0 (black) to 255 (white). Grayscale values can also be measured as percentages of black ink coverage (0% is equal to white, 100% to black).
  16. 16. 5. Bitmap mode • • Bitmap mode uses one of two color values (black or white) to represent the pixels in an image. Images in Bitmap mode are called bitmapped 1-bit images because they have a bit depth of 1.
  17. 17. 6. Duotone mode • Duotone mode creates – – – – monotone, duotone (two-color), tritone (three-color), and quadtone (four-color) grayscale images using one to four custom inks.
  18. 18. 7. Index mode • • • Indexed Color mode produces 8-bit image files with up to 256 colors only. Index colors are limited, so it can reduce file size yet maintain the visual quality needed for multimedia presentations, web pages. Limited editing is available in index mode.
  19. 19. 8. Multichannel mode • • Multichannel mode images contain 256 levels of gray in each channel and are useful for specialized printing. Deleting a channel from an RGB, CMYK, or Lab image automatically converts the image to Multichannel mode.
  20. 20. foreground and background colors • Photoshop uses the foreground color to paint, fill, and stroke selections and • The background color to make gradient fills and fill in the erased areas of an image. • The foreground and background colors are also used by some special effects filters.