Camera Parts

1. Aperture In optics, an aperture is a hole or an opening through which light travels.
2. Shutter is a  device that allows light to pass for a determine period of time, for the purpose of exposing
3. Exposure is the account of light allowed to fall on each area unit of a photographic  medium
4. Depth of field is the distance between the nearest and farthest object in the in a scene that appear acceptably sharp in an image 
5. F-stop a camera setting corresponding to a particular f-number
6. focal length is distance between the centers of a lens or curved mirror and its focus.