Components in a Camera

Components in a Camera


All still cameras have the same general components, but the design and arrangement of these components distinguish one type of camera from another and make them especially suited to specific uses. These components are:

  1. Camera lens, usually consisting of several glass and air elements, to form the image and put it on the camera sensor or film.

  2. Focusing mechanism for the camera lens to allow it to focus on subjects at various distances.

  3. Camera viewfinder or LCD display to allow image composition; this may be a separate device or simply a ground glass at the film plane for film camera that can be removed or displaced for insertion of the film holder.

  4. Camera shutter to keep the image-forming light off the camera sensor or film until the desired moment, to control the time that the light is on the sensor or film and thereby assist correct exposure of the image, and to determine the degree to which motion is "stopped."

  5. An iris diaphragm, to control both the amount of light reaching the camera sensor or film (in conjunction with the shutter) and the depth of field in the image.

  6. A light-tight container for film camera to hold the film ready for exposure; this may be a separate item or it may be part of the camera itself.

More about Camera Accesories and Equiments


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