Aperture- is a hole or an opening through which light travels.
Shutter-is a device that allows light to pass for a determined period of time.
Exposure- is the amount of light allowed to fall on each area unit of a photographic medium during the process of taking a photograph.
Depth of Field- The sharp area surrounding the point of focus.
F-stop- A ratio of the focal length of the lens to the diameter of the aperture
Focal Length-a measure of how strongly the system converges or diverges light.
Auto Focus- systems to focus the camera automatically by a variety of methods.
Collimated Light- light whose rays are parallel.
Diaphragm- is a thin opaque structure with an opening at its center.
Flash Memory- is a non-volatile computer storage chip that can be electrically erased and reprogrammed.
Canon Rebel T3
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