Digital Images

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Digital Images

  1. 1. Digital Images, Photo Basics, Understanding Your Camera
  2. 2. What’s a P I X E L ? It’s a “dot”—a square, filled with color “ dpi” = “dots per inch” More dpi = more information More dpi = sharper image More dpi = larger file More
  3. 4. 144 dpi 186K 72 dpi 60K 36 dpi 24K
  4. 5. What does the resolution setting mean? 1600x1200= best quality, big file (2 shots per disk) 640x480= lowest quality, small file (24 shots per disk) (Not adequate for print documents, but good enough for PowerPoint presentations.) (OK for most print documents.)
  5. 6. GUIDELINE : <ul><li>For documents to be printed, </li></ul><ul><li>use high quality image (200+ dpi) </li></ul><ul><li>For PowerPoint presentations, </li></ul><ul><li>use small file size (72 dpi) </li></ul>
  6. 7. Digital Images, Photo Basics, Understanding Your Camera
  7. 8. Which photo is more appealing? (distant) (close) GUIDELINE: Move in close!
  8. 9. If at first you’re too far away… … crop!
  9. 14. Which photo is more appealing? (subject centered) (subject off center)
  10. 15. Which photo is more appealing? GUIDELINE: Observe the “Rule of Thirds” (subject centered) (subject off center)
  11. 16. “ The Rule of Thirds” Grid lines Grid lines Hot spots
  12. 17. “ The Rule of Thirds” GUIDELINE: Align subject on grid line or hot spot.
  13. 18. children aligned on bottom grid line
  14. 19. nature guide on left grid line; children on bottom grid line
  15. 20. head and monitor on hot spots
  16. 21. student on left grid; bottle on hot spot
  17. 22. REVIEW : <ul><li>Move in close </li></ul><ul><li>Observe “Rule of Thirds” </li></ul>

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