film-How a Camera Works


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film-How a Camera Works

  1. 1. How Your Camera Works
  2. 2. Path of Light Light Source Lens Film
  3. 4. Your Lens <ul><li>Moveable curved pieces of glass allow you to focus the light entering the camera </li></ul>
  4. 5. Aperture <ul><li>How large the opening (iris) in the lens is </li></ul><ul><li>1.8, 2, 2.8, 3.5, 4, 5.6, 8, 11, 16, 22, 32 </li></ul>
  5. 6. Depth of Field <ul><li>Area of the image that appears in focus from foreground to background </li></ul><ul><li>Affected by aperture </li></ul>
  6. 8. Shutter <ul><li>Controls how long light passes through to the image sensor </li></ul><ul><li>Can be as short as 1/500 second to 1 second or even minutes </li></ul><ul><li>Be aware of lighting and it’s affect on the shutter speed </li></ul><ul><li>Beware of shutter lag </li></ul>
  7. 9. Stopped Motion
  8. 10. Blurred Motion
  9. 11. Film <ul><li>Coated with a light sensitive chemical </li></ul><ul><li>Chemical reaction occurs when the film is exposed to light </li></ul><ul><li>Comes in different sensitivities called ISO </li></ul>
  10. 12. ISO <ul><li>International Standards Organization </li></ul><ul><li>Measures the sensitivity of the sensor </li></ul><ul><li>Higher ISO increases light sensitivity, but also increases grain </li></ul><ul><li>100, 200, 400, 800, 1600, 3200 </li></ul>
  11. 13. Grain <ul><li>As the sensitivity of your film increases, so does the size of your grain </li></ul><ul><li>This can be seen as an artistic effect, but it does degrade the details in your image </li></ul>
  12. 14. Small Grain Large Grain(Grainy)
  13. 15. Flash <ul><li>To flash or not to flash </li></ul>
  14. 16. Beautiful non-flash lighting
  15. 17. Bad Flash Use Good Flash Use
  16. 18. Shooting Modes
  17. 19. Full Auto <ul><li>Your camera makes all the choices for you except how to frame the shot and when to press the shutter </li></ul>
  18. 20. Program Mode <ul><li>Your camera chooses aperture and shutter speed, but you have the ability to shift the aperture/shutter speed combo </li></ul>
  19. 21. Aperture Priority <ul><li>You choose the aperture and your camera choose an appropriate shutter speed </li></ul><ul><li>Use this mode for if depth of field is important for your shot </li></ul>
  20. 22. Shutter Priority <ul><li>You decide the shutter speed and your camera chooses an appropriate aperture </li></ul><ul><li>Use this mode if motion is important </li></ul>
  21. 23. Manual <ul><li>You make all the decisions based on your light meter’s reading </li></ul><ul><li>On your cameras manual may only include choices on color, ISO, exposure compensation,etc. </li></ul>
  22. 24. Scene Modes Preset Configurations
  23. 25. Portrait <ul><li>Softens the background while keeping your subject in sharp focus </li></ul>
  24. 26. Night Portrait <ul><li>Chooses flash and slower shutter speed to make both background and foreground visible </li></ul><ul><li>Use in dark conditions when your subject is relatively close to the camera and you want the background to be visible </li></ul>
  25. 27. Landscape <ul><li>Keeps as much in focus as possible </li></ul><ul><li>Sometimes this setting also sharpens digitally and/or enhances color </li></ul>
  26. 28. Night Landscape <ul><li>This setting turns off the flash and uses a slower shutter speed </li></ul><ul><li>Requires a tripod </li></ul>
  27. 29. Beach/Snow & Backlight <ul><li>For photographing very bright subjects </li></ul><ul><li>Sand and snow can be so bright that it confuses your camera-this leads to a too dark photo </li></ul><ul><li>Backlight-when a very bright light comes from behind your subject </li></ul><ul><li>This setting chooses an aperture and shutter speed based on the foreground subject </li></ul><ul><li>May use flash to help lighten foreground </li></ul>
  28. 30. Close Up/Macro <ul><li>Allows for close up shots </li></ul>
  29. 31. Sports <ul><li>Freezes action with a fast shutter speed </li></ul>
  30. 32. Drive Settings <ul><li>One shot </li></ul><ul><li>Multiple shot blast </li></ul><ul><li>Self timer </li></ul>