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film-How a Camera Works

film-How a Camera Works






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    film-How a Camera Works film-How a Camera Works Presentation Transcript

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