The Three Elements of Exposure Understanding f/stop, shutter speed, and ISO

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Text of The Three Elements of Exposure Understanding f/stop, shutter speed, and ISO

  • Slide 1
  • The Three Elements of Exposure Understanding f/stop, shutter speed, and ISO
  • Slide 2
  • What is exposure? Definition 1: the amount of light it takes to produce a printable image on the negative (film) Definition 2: the actual taking of the photo
  • Slide 3
  • Understanding exposure ISO Aperture (f/stop) Shutter speedExposure
  • Slide 4
  • Negative and Positive
  • Slide 5
  • Exposure Factor 1: ISO ISO Aperture (f/stop) Shutter speed
  • Slide 6
  • Exposure Factor 1: ISO International Standard Organization Measures film speed What is film speed?
  • Slide 7
  • Film speed is not
  • Slide 8
  • Film speed is. The sensitivity of the film to light.
  • Slide 9
  • Film Speed, contd The higher the ISO number, the more sensitive the film is to light. ISO 50ISO 100ISO 200ISO 400ISO 800ISO 1600 ISO 3200 ISO 6400 SlowMedium Fast Ultrafast Needs more light *this is the film speed we use Needs less light
  • Slide 10
  • Film Speed, contd Film speed also determines grain. ISO 50ISO 100ISO 200ISO 400ISO 800ISO 1600 ISO 3200 ISO 6400 SlowMedium Fast Ultrafast Fine grain Medium grain Coarse grain
  • Slide 11
  • Film speed, contd Fine grain Coarse grain
  • Slide 12
  • How do you manipulate film speed?