The Camera

• parallax- which occurs when the viewfinder or viewing lens is separated from the taking lens.
• pentaprism- a prism that has five faces, a pair of which are at 90° to each other; a ray entering one of the pair emerges from the other at an angle of 90° to its original direction: used esp. in single-lens reflex cameras to reverse images laterally and reflect them to the viewfinder.
• photographer- a person who takes photographs, esp. one who practices photography professionally.
• subsequently- occurring or coming later or after.
• aperture- an opening, as a hole, slit, crack, gap, etc
• shutter- a solid or louvered movable cover for a window
• exposure- the act of exposing.
• depth of field- the range of distances along the axis of an optical instrument, usually a camera lens, through which an object will produce a relatively distinct image.
• F-stop-the setting of an adjustable lens aperture, as indicated by an f number.
• focal length-the distance from a focal point of a lens or mirror to the corresponding principal plane.