The Archives

• Glossary

  ISO

  03.10.09 | Permalink | Comments

  In still photography, the sensitivity of the silver halide crystals in the film to light. In digital still photography, the sensitivity of the image sensor to light. Digitally, it’s also known as the exposure index rating (EI).

• Podcast

  All About ISO

  03.10.09 | Permalink | Comments

  Podcast: Play in new window | Download (Duration: 15:59 — 14.7MB)

  We’re finishing up our basics of photography with ISO, or film speed. This builds on our previous episodes on the pinhole camera, shutter speed and aperture.

• Podcast

  How Shutter Speed Works

  03.03.09 | Permalink | Comments

  Podcast: Play in new window | Download (Duration: 14:48 — 13.6MB)

  Today our topic of conversation is shutter speed, continuing our media science series about photography. Shutter speed refers to how long the shutter of a camera is open for. Shutter speed is closely tied to aperture.

• Podcast

  What is Aperture?

  02.23.09 | Permalink | Comments

  Podcast: Play in new window | Download (Duration: 14:14 — 13.1MB)

  This week, we continue our media science conversation about cameras and talk about aperture, which adjusts how much light is seen by the film plane.

• Glossary

  Aperture

  02.18.09 | Permalink | Comments

  Aperture is a ratio of the focal length of a camera to the diameter of the iris of the camera. With a wider aperture, which is a lower number, more light will get into the camera. With a more narrow aperture, which is a higher number, the amount of time the camera is taking that [...]

• Podcast

  Photography Basics

  02.17.09 | Permalink | Comments

  Podcast: Play in new window | Download (Duration: 13:28 — 12.4MB)

  This week, we begin our series on photography. We’re starting the series with the most basic camera, the pinhole camera.

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