Shutter (photography)
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In photography, a shutter is a device that allows light to pass for a determined period, exposing photographic film or a photosensitive digital sensor to light in order to capture a permanent image of
An early (1875) rapid acting shutter by A. A. Pearson of Leeds
A focal-plane shutter. The plastic curtains travel vertically.
One diaphragm shutter opening over another in an Akarex camera
Dial-set three-leaf Compur shutter, partially open.
Diaphragm (optics)
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In optics, a diaphragm is a thin opaque structure with an opening at its center. The role of the diaphragm is to stop the passage of light, except for the light passing through the aperture. Thus it i
Shutter (photography)
…plate consisted of a part of a sphere integrated to rotate behind the lens. It was a type of shutter found on the Photosphere and other cameras. A diaphragm or leaf shutter (as distinct from the simple leaf shutter above) consists of a number of thin blades which briefly uncover the camera aperture to make…
Pentacon 2.8/135 lens with 15-blade iris
Aperture mechanism of Canon 50mm f/1.8 II lens, with five blades
In the human eye, the iris (light brown) acts as the diaphragm and continuously constricts and dilates its aperture (the pupil)