The visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye.
In optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center and it stops the passage of light.
An image sensor is a device that converts an optical image into an electronic signal.
The movie camera is a type of photographic camera which takes a rapid sequence of photographs on strips of film which was very popular for private use in the last century until its successor, the video camera, replaced it
Shutter- Each of a pair of hinged panels fixed inside or outside a window that can be closed for security or privacy or to keep out light.
Exposure- The state of being exposed to contact with something.
Depth of field- Distance from the nearest to the farthest point of something or from the front to the back.
F-stop- the f-number (sometimes called focal ratio, f-ratio, f-stop, or relative aperture) of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens
Focal length- The distance between the center of a lens or curved mirror and its focus.
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