The Camera

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.

shutter lag-
is the delay between triggering the shutter and when the photograph is actually recorded. autofocus -
having the ability to focus automatically: an autofocus lens; an autofocus cameraParallax is an apparent displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines
aperture-
Also called aperture stop . Optics . an opening, usually circular, that limits the quantity of light that can enter an optical instrumentshutter

Photography . a mechanical device for opening and closing the aperture of a camera lens to expose film or the like.

exposure
the act of presenting a photosensitive surface to rays of light
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.