Camera controls - Exposure Triangle

Photography - Technical

Camera Controls

History of Photography

• Ted video

MAKING BEAUTIFUL PHOTOGRAPHS

• National Geographic:http://video.nationalgeographic.com/

video/player/photography/photographers/simply-beautiful.html

HOW DOES LIGHT TRAVEL THROUGH A CAMERA?

A

A

B

C

C

B

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 ISO measures the sensitivity of the image

sensor.

ISO 100 ISO 3200

ISO AND NOISE

• The lower the number (eg. 100) the finer/smoother 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.

to control the amount of time during which the camera 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.

SHUTTER SPEED

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

to control the amount of light entering the lens.

• has an effect on focus and depth of field

APERTURE

In the camera lens

Small number = shallow depth of field.

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

Shooting

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?