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Cameras 101 (Video)

3a6060bc7ace07fa75791cd5dac2d46a?s=47 Stuart Kent
November 03, 2016

Cameras 101 (Video)

A lightning talk on camera fundamentals, covering exposure, aperture, shutter speed and ISO.

Video: https://youtu.be/lGaPFMMVJa8
Venue: Detroit Labs

3a6060bc7ace07fa75791cd5dac2d46a?s=128

Stuart Kent

November 03, 2016
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Transcript

  1. Cameras 101

  2. None
  3. Cameras measure light

  4. Step 1 Open aperture

  5. Step 1 Open aperture Step 2 Detect photons...

  6. Step 1 Open aperture Step 2 Detect photons... Step 3

    Close aperture
  7. More photons -> Brighter area

  8. Fewer photons -> Darker area

  9. None
  10. Overall photo brightness = "Exposure"

  11. Underexposed

  12. Overexposed

  13. !

  14. 3 parameters

  15. Aperture

  16. Aperture Bigger Hole = Brighter

  17. Aperture Bigger Hole = Brighter Bigger Hole = Smaller "f-stop"

  18. Aperture Bigger Hole = Brighter Bigger Hole = Smaller "f-stop"

    f/1, f/1.4, f/2.0, f/2.8, etc. ½ ½ ½
  19. Shutter Speed

  20. Shutter Speed Slower = Brighter

  21. Shutter Speed Slower = Brighter Measured as duration

  22. Shutter Speed Slower = Brighter Measured as duration 2s, 1s,

    ½s, ¼s, etc. ½ ½ ½
  23. ISO

  24. ISO Higher = Brighter

  25. ISO Higher = Brighter No meaningful units

  26. ISO Higher = Brighter No meaningful units 100, 200, 400,

    800, etc. 2 2 2
  27. 1 Brightness... ... ∞ combinations

  28. L'art

  29. Aperture Depth of Field (DoF)

  30. f/5 f/11

  31. Shutter Speed Freeze/Blur Motion

  32. ½s 1/640s

  33. ISO Compensation*

  34. f/2.8 1/100s ISO 1600

  35. Camera Modes Auto -> P -> {S, A} -> M

  36. Automatic (Auto)

  37. Camera guesses exposure

  38. Camera guesses exposure Camera sets all parameters

  39. ?

  40. Program (P)

  41. Camera guesses exposure

  42. Camera guesses exposure User adjusts exposure

  43. Camera guesses exposure User adjusts exposure Camera sets all parameters

  44. ?

  45. Shutter Priority (S)

  46. Camera guesses exposure

  47. Camera guesses exposure User adjusts exposure

  48. Camera guesses exposure User adjusts exposure User Shutter Speed applied

  49. Camera guesses exposure User adjusts exposure User Shutter Speed applied

    Camera sets Aperture, ISO
  50. None
  51. Aperture Priority (A)

  52. Camera guesses exposure

  53. Camera guesses exposure User adjusts exposure

  54. Camera guesses exposure User adjusts exposure User Aperture applied

  55. Camera guesses exposure User adjusts exposure User Aperture applied Camera

    sets ISO, Shutter Speed
  56. None
  57. Manual (M)

  58. User sets Aperture, ISO, Shutter Speed

  59. None
  60. First step: Use P mode

  61. First step: Use P mode Last step: Use A or

    S modes
  62. Other fun stuff includes...

  63. Framing

  64. Framing

  65. Framing Flash

  66. Framing Flash Processing

  67. Framing Flash Processing

  68. Framing Flash Processing Focal Length

  69. Framing Flash Processing Focal Length Sensor Size

  70. Framing Flash Processing Focal Length Sensor Size White Balance

  71. Don't stop snapping!

  72. Fin www.cambridgeincolour.com