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Intro to Photography

Notes

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Chapter 2: Depth of Field

Exploring Depth of Field with the Following Photo

Photo by Les Klassen.

Three elements in the photo.

Elements

  1. My Camera (You can't see it but it's settings and its location to the subject plays a role with Depth of Field.
  2.  The Subject
  3. The Background.

This illustration shows you the three elements of the photo. The subject is the plant life, the Background is the sunrise and other plant life and the Camera is obviously, the camera. Note the "Narrow Depth of Field." This is controlled by your camera's aperture.

The aperture setting defines how blurry the background is.

When you choose a small aperture (1.4, 2, 2.8) the backround is blurry provided that it is far enough behind your subject.  Apertures of 5.6 or higher start sharpening the background puts it into focus.  See the diagram below.
Aperture
The hole or iris of your lens. The smaller the diameter of the aperture the higher the setting number is (eg. F22). The wider or larger the diameter of the aperture the smaller the smaller the setting number is (f1.4). A Smaller setting number/wider aperture, the blurrier the background, the higher the number setting/smaller the aperture diameter the sharper the background.

Source: http://en.wikipedia.org/wiki/Image:Aperture_diagram.svg

Source

Date:    03/18/07
Author: Mehmetaergun

Chapter 3: Film Grain / Noise »

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