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Different kinds of camera lenses, including wide angle, telephoto and speciality. A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses (compound lens) used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.
A camera lens is an assembly of multiple optical elements, typically made from high-quality glass. [22] Its primary function is to focus light onto a camera's film or digital sensor, thereby producing an image. [12]
Very-large-aperture lenses designed to be useful in very low light conditions with apertures ranging from f/1.2 to f/0.9 are generally restricted to lenses of standard focal length because of the size and weight problems that would be encountered in telephoto lenses and the difficulty of building a very wide aperture wide angle lens with the ...
In order to more easily compare lens–camera pairs, it is common to use their 35 mm equivalent focal length. For example, when talking about a 14 mm lens for a Four Thirds system camera, one would not only indicate that it has a focal length of 14 mm, but also that its "35 mm equivalent focal length" is 28 mm.
A simple scheme for a zoom lens divides the assembly into two parts: a focusing lens similar to a standard, fixed-focal-length photographic lens, preceded by an afocal zoom system, an arrangement of fixed and movable lens elements that does not focus the light, but alters the size of a beam of light travelling through it, and thus the overall ...
A larger megapixel rating does not mean higher quality. Low light sensitivity is a good example of this. When comparing two sensors of the same size, for example, two APS-C sensors one 12.1 MP and one 18 MP, the one with the lower megapixel rating will usually perform better in low light.
Digital Still Camera (DSC), such as the Sony DSC cameras, is a type of camera that does not use a reflex mirror. DSCs are like point-and-shoot cameras and are the most common type of cameras, due to their comfortable price and its quality. [citation needed] Here are a list of DSCs: List of Sony Cyber-shot cameras
The camera weighed 8 pounds (3.6 kg), recorded black-and-white images to a cassette tape, had a resolution of 0.01 megapixels (10,000 pixels), and took 23 seconds to capture its first image in December 1975. The prototype camera was a technical exercise, not intended for production. [20]
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