Photography - Technical

      Camera Controls
MAKING BEAUTIFUL PHOTOGRAPHS
• National Geographic:
http://video.nationalgeographic.com/video
  /player/photography/photographers/sim
  ply-beautiful.html
HOW DOES LIGHT TRAVEL THROUGH A
            CAMERA?

                     C
 A

 B                   B

 C                   A
CAMERA OBSCURA
QUIZ
1. What did artists use pre-1800’s to
   draw/trace with?

2. What does light do to an image when it
   travels through a camera?

3. In digital camera’s what reverses the
   image?

4. In digital camera’s what does the
   photograph produce itself onto?
EXPOSURE TRIANGLE
EXPOSURE TRIANGLE QUIZ
1. Which component controls the grain?

2. Which component controls the blur?

3. Which component controls the Depth of
   Field?
ISO measures the
ISO     sensitivity of the image
                sensor.




      ISO 100               ISO 3200
ISO AND NOISE

• The lower the
  number (eg.
  100) the
  finer/smoothe
  r the grain.

• Meaning that
  the image will
  be higher
  quality.
ISO AND LIGHT
The higher the number (eg 1600) the more sensitive your camera is
  to light.

Meaning more light is let onto the image but the quality is poor.
SHUTTER SPEED during which the camera
to control the amount of time
is exposed to light.
'faster' shutter speeds decrease the amount of light and
freeze the image.
‘slower’ shutter speeds increase the amount of light and
can create movement in the image.
Mitsuaki Iwago
Stephen Dalton
Linda Connor
Bragaglia brothers
Karl de Keyzer
QUIZ
1. Give a numerical example of a fast
   shutter speed

2. Give a numerical example of a slow
   shutter speed
APERTURE
to control the amount of light entering the lens.
• has an effect on focus and depth of field
In the camera lens
Small number =
shallow depth of
field.
Shooting




 When shooting a landscape, get as much of the
photograph in sharp focus as possible (f11 to f22).

In a portrait, shallower dof (f2.8 - 8) will isolate your
       subject from distracting backgrounds
Keith Arnatt
Erna Lendvai-Dircksen
Cornell Capa
QUIZ
1. What F stop would you typically use when
   you shoot portraits?

2. Give a numerical example of an F stop that
   creates a shallow depth of field.

3. What could you photograph at F22?

4. If you had F22 would more or less light
   come through the camera than F5.6?

Camera controls

Editor's Notes

  • #5 The camera obscura was made portable by the 1700s by putting it in a box with a pinhole on one side and a glass screen on the other. Light coming through this pinhole projected an image onto the glass screen, where the artist could easily trace it by hand. Artists soon discovered that they could obtain an even sharper image by using a small lens in place of the pinhole. For the birth of photography to happen two key discoveries were still needed: a way to combine light-sensitive material with the camera obscura device and a way to make an image permanent.