Photography Technology

What is a camera?

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2 answers

What is a camera?

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Wrote answer · 8/26/2022
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A camera is a device used to capture still or moving images. It works by focusing light from a scene onto a sensor or film, which then records the image.

Here are some key components and aspects of a camera:

  • Lens: Focuses light onto the image sensor or film. Different lenses offer various focal lengths and apertures, affecting the image's field of view and depth of field.
  • Aperture: An opening in the lens that controls the amount of light passing through. It's measured in f-stops (e.g., f/2.8, f/8). A wider aperture (smaller f-number) lets in more light and creates a shallower depth of field.
  • Shutter: A mechanism that controls the duration of time the image sensor or film is exposed to light. Shutter speed is measured in seconds or fractions of a second (e.g., 1/1000s, 1s).
  • Image Sensor or Film: The medium that records the image. Digital cameras use image sensors (like CCD or CMOS sensors), while traditional cameras use film.
  • Viewfinder or Screen: Allows the photographer to see the scene that the camera will capture.

Cameras come in various forms, including:

  • Digital Cameras: Include DSLRs, mirrorless cameras, and compact cameras.
  • Film Cameras: Traditional cameras that use film to capture images.
  • Smartphone Cameras: Cameras integrated into smartphones.
  • Video Cameras: Specialized for capturing moving images.

For more detailed information, you can refer to these resources:

Wrote answer · 3/14/2025
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