Single Lens Camera

Inside of Camera

• Single Lens Reflex Camera- In the single-lens reflex camera the photographer sees the scene through the camera lens.
• Pentaprism- five-sided reflecting prism used to deviate a beam of light by 90°.
•  Image sensor- is a device that converts an optical image to an electric signal.
• Parallax- 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- a hole or an opening through which light travels.
• shutter- a device that allows light to pass for a determined period of time, for the purpose of exposing photographic film or a light-sensitive electronic sensor to light to capture a permanent image of a scene.
• exposure-The size of the aperture and the brightness of the scene controls the amount of light that enters the camera during a period of time, and the shutter controls the length of time that the light hits the recording surface.
• depth of field- the portion of a scene that appears acceptably sharp in the image.
• F-stop- expresses the diameter of the entrance pupil in terms of the focal length of the lens; in simpler terms, the f-number is the focal length divided by the "effective" aperture diameter.
• focal length- a measure of how strongly the system converges (focuses) or diverges (defocuses) light.