How Your Camera Works

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How Your Camera Works

  1. 1. How Your Camera Works
  2. 2. Path of Light Light Source Lens Sensor
  3. 3. Your Lens <ul><li>Optical Zoom-repositioning of the lens </li></ul><ul><li>-retains quality </li></ul><ul><li>Digital Zoom-simply crops the photo </li></ul><ul><ul><li>Drastically reduces quality </li></ul></ul>
  4. 4. Aperture <ul><li>How large the opening (iris) in the lens is </li></ul>
  5. 5. 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. 7. 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. 11. The Digital Sensor <ul><li>Collects light data </li></ul>
  8. 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 noise </li></ul>
  9. 13. Noise <ul><li>Created by electronic errors </li></ul><ul><ul><li>Often described as the camera filling in the blanks </li></ul></ul>
  10. 15. File Formats <ul><li>JPEG-widely popular </li></ul><ul><li>TIFF-no compression </li></ul><ul><li>RAW-raw data </li></ul>
  11. 16. Flash <ul><li>To flash or not to flash </li></ul>
  12. 19. White Balance <ul><li>Color Balance-The color of light </li></ul><ul><li>Your eyes balance the colors so that they look basically the same </li></ul><ul><li>Fluorescent light is very green-yellow </li></ul><ul><li>Sunlight is very blue </li></ul><ul><li>Your camera will probably do this automatically </li></ul>
  13. 22. Shooting Modes
  14. 23. 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>
  15. 24. 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>
  16. 25. 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>
  17. 26. 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>
  18. 27. 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>
  19. 28. Scene Modes Preset Configurations
  20. 29. Portrait <ul><li>Softens the background while keeping your subject in sharp focus </li></ul>
  21. 30. 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>
  22. 31. 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>
  23. 32. 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>
  24. 33. 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>
  25. 34. Close Up/Macro <ul><li>Allows for close up shots </li></ul>
  26. 35. Sports <ul><li>Freezes action with a fast shutter speed </li></ul>
  27. 36. Drive Settings <ul><li>One shot </li></ul><ul><li>Multiple shot blast </li></ul><ul><li>Self timer </li></ul>

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