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Flashcards in Camera controls Deck (6)
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1
Q

aperture

A
  • a control that allows control of the amount of light passing through the lens into the camera
  • the wider the aperture the smaller the f number and the more light can pass through
  • each increase is known as a stop
  • small f number can make image soft, larger f number can make it sharp although to large diffraction occurs
  • changing the aperture affects the depth of field
2
Q

Depth of field

A

how much of the images foreground or background is in focus

  • high dof= most of the picture is in focus
  • low dof= focusing on is pin sharp but the rest of the image/ background is blurred
3
Q

shutter speed

A
  • ensures that the camera is only exposed to light for a certain period of time
  • the longer the shutter speed is open for the more light that hits the camera sensor
  • by doubling the amount, we increase exposure by a stop
  • short shutter speed= freeze action
  • longer shutter speed= blurs moving objects (motion blur)
4
Q

exposure

A

underexposed- duller image rather darken resolve by increasing brightness on photoshop
over exposed- brighter image harder to resolve
- a compromise of aperture and shutter speed will be needed for correct exposure

5
Q

ISO

A

international organisation of standardisation

  • increasing ISO the camera applies amplification to the electrical signal form the sensor
  • too high of an ISO can cause the image to become grainy
6
Q

reciprocity

A

the reciprocity law is the relationship between shutter speed and aperture this applies to ISO also
- doubling the time the shutter remains open or increasing the aperture size by 1 stop will double the exposure (for correct exposure there will need to be a compromise of aperture and shutter speed)