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Aperture presentation 1 Aperture presentation 1 Presentation Transcript

  • Aperture
    • By Addie Butler
  • What is aperture?
    • Aperture is the opening in the lens that lets more or less light in by opening and closing
    • The bigger the aperture, the more light is allowed in while the smaller the aperture, the less light is allowed in.
    • Apertures are notated as f/stops
  • f/stop
    • Common f/stops or aperture numbers are: 1.4, 2.8, 4, 5.6, 8, 11 , 16, 22, & 32
    • The smaller the f/stop the wider the opening
      • f/1.4 is a wider aperture then f/8 and therefore will let in more light.
    • Each whole aperture stop lets in twice as much light as the one before
      • For example f/5.6 lets in twice as much light as f/8
  • Depth of Field
    • Depth of Field is how much of the area in frond and behind the subject that is in focus
    • The wider the aperture, the narrower the depth of field which will give you a blurrier background
    • The narrower the aperture, the greater the depth of field which will put more of your background in focus
  • When to use a wide aperture
    • When you want to allow more light to come in and expose your photograph more
    • When you want to blur your background
    • Use for portraits, flowers or anything else that you might want a blurred background
    f/5.6
  • When to use a small aperture
    • When you want to allow not as much light to expose your photograph less
    • When you want everything in your photograph sharp and in focus
    • Use for landscapes, group photos and any other photos you might want the entire photo to be in focus
  • Good example of using the wrong aperture f/4
  • Controlling your Aperture
    • Aperture can be controlled in Aperture Priority mode and Manual Mode
      • Manual- You can set your Aperture, ISO and Shutter Speed
      • Aperture Priority- You can set your Aperture and ISO and the camera decides the best shutter speed
        • Canon is AV for Aperture Priority
        • Nikon and other cameras is A for Aperture Priority