About the camera

Parallax : A displacement or difference in the apparent the 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.

Pentaprism : A five-sided prism used to deviate a beam of light by a constant 90, even if the entry beam is not at 90 to the prism.

Pellicle Mirror : An ultra-thin, ultra-lightweight semi-transparent mirror employed in the light path of an optical instrument, splitting the light beam into two separate beams, both of reduced light intensity.

Lens : The part of a camera through which the light travels before it reaches the film.

Aperture : A hole or an opening through which light travels.

Shutter : A device that allows light to pass for a determined period of time or a light-sensitive electronic sensor to light to capture a permanent image of a scene.

Exposure : The amount of light allowed to fall on each area unit of a photographic medium photographic film or image sensor during the process of taking a photograph.

Depth Of Field : The distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image.

F-stop : the setting of an adjustable lens aperture, as indicated by an f number.

Focal Length : An optical system is a measure of how strongly the system converges or diverges light.