Camera Shop Tacoma

Traditional Camera Terms

Lens The lens of a camera captures light and brings objects in front of the camera into focus. Lenses are manufacture according to a wide variety of specifications, whether it be wide angle, standard or telephoto.Focus A camera lens is only capable of bringing objects within a specific range into clear view. A camera’s focus allows for objects in either the foreground, middle ground or background of a shot to show through with the most clarity. Most amateur cameras will have what is called a fixed focus, meaning all objects within a midrange distance from the camera are reasonably in focus so that no tinkering is necessary for quick photo taking.Exposure Exposure refers to the amount of light let into a camera over a usually brief period of time. This is controlled by the shutter, of which shutter lengths may vary, with a longer shutter allowing more light to enter the camera. The aperture, or size of the opening through which light enters also has a major effect on the exposure. A smaller aperture with a longer shutter will likely produce a similar exposure as compared to a larger aperture and a quick shutter. A prolonged exposure will allow for moving objects to blend together or distort. For example, a popular exposure trick is to leave film exposed over the course of a day’s traffic, leaving a blur of lights across the traveled roads. For extremely long exposure periods, the same effect can be had with stars in the sky.Film film is the medium by which an image is captured. Traditional photographic film is a sheet of plastic coated with a light sensitive emulsion with differing crystal sizes, which ultimately determine the film’s sensitivity, contrast and resolution. When exposed to light, it forms an image which must be developed in order to be made visible. Most consumer cameras today are digital, using merely an image sensor to convert a picture’s subject into an electric signal, then converted and stored for viewing.

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