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Lens workshop

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Slideshow for an introduction to the world of lenses for students.

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Lens workshop

  1. 1. LensesFrom Basics To Advanced
  2. 2. LensesThe Relationship between SLR Camera Structure and Lens
  3. 3. LensesTerminology: Resolution and Contrast
  4. 4. LensesTerminology : Apertures
  5. 5. LensesTerminology : Apertures
  6. 6. LensesDiffraction
  7. 7. LensesFocus Scale
  8. 8. LensesTerminology: Focal Length
  9. 9. LensesTerminology: Focal Length
  10. 10. LensesThe Relationship between SLR Camera Structure and Lens
  11. 11. LensesScreen-change according to focal length
  12. 12. LensesScreen-change according to focal length
  13. 13. LensesTerminology: Prime Vs Zoom
  14. 14. LensesFocal Length and Handheld PhotographyMinimum Shutter-speed= 1 / focal lengthE.g.: 200mm lens needs at least a shutter-speed of 1/200.
  15. 15. LensesFocal Length and Handheld Photography Using a Vibration Reduction (VR / IS) lens allows 4 more stops E.g.: 200mm lens needs at least a shutter-speed of 1/.......
  16. 16. LensesConfusion: When changing film/sensor formats
  17. 17. LensesConfusion: When changing film/sensor formats
  18. 18. LensesConfusion: When changing film/sensor formats
  19. 19. LensesConfusion: Ef vs EF-s / FX vs DX
  20. 20. LensesTerminology: Bokeh Bokeh describes the rendition of out-of-focus points of light. Bokeh is different from sharpness. Sharpness is what happens at the point of best focus. Bokeh is what happens away from the point of best focus.
  21. 21. LensesTerminology: Bokeh
  22. 22. LensesTerminology: BokehPoor Good
  23. 23. LensesTerminology: VignettingVignetting means that theres a decreasing (=darker) illumination towards the image corners.Vignetting problems can easily be recognized in plain colored area like the sky as shown the thepictures below - the pictures in the 2nd row illustrate the effective illumination as it would be presentwhen shooting e.g. a white paper.
  24. 24. LensesTerminology: Distortion
  25. 25. LensesTerminology: Distortion
  26. 26. LensesLens Errors: Flare
  27. 27. LensesLens Errors: Chromatic Aberration
  28. 28. LensesLens Errors: Chromatic Aberration
  29. 29. LensesMakro Lenses
  30. 30. LensesMakro Lenses
  31. 31. LensesTilt-Shift Lens
  32. 32. Using a Schnieder PC TS lens - YouTubehttps://www.youtube.com/watch?v=gMYnNoVsDkI
  33. 33. Lynda.com>Foundations of Photography: Specialty Lenses>6. Using Tilt-Shift Lenses>Correcting perspective http://www.lynda.com/home/Player.aspx?lpk4=119346&playChapter=False
  34. 34. LensesTilt-Shift Lens
  35. 35. LensesLens Filters: Polarization Lynda.com Foundations of Photography: Specialty Lenses> Working with Lens Attachments> Polarizing filters http://www.lynda.com/home/Player.aspx?lpk4=119317&playChapter=False
  36. 36. LensesMaintenance: Dust on Front Element
  37. 37. LensesMaintenance: Dust on back Element
  38. 38. LensesMaintenance: Dust on back Element
  39. 39. LensesCleaning See videos > Lens maintenance on : http://wsa.wikidot.com/photo:lenses-and-optics
  40. 40. LensesFurther Info http://wsa.wikidot.com/photo:lenses-and-optics

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