the camera

Lens- a piece of glass or other transparent substance with curved sides for concentrating.


Image- a representation of the extremal form of a person or thing in sculpture painting.

Auto Focus- Optical system uses a sensor, a control system.

Aperture- An opening, hole or a gap.

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.

Focal Length- The distance between the center of a lens or curved mirror and its focus.