Cameras 101 (Video)

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

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

Transcript

1. Cameras 101
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
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
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
57. Manual (M)
58. User sets Aperture, ISO, Shutter Speed
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