Meaning of lens
Lens
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Digital photography
Glossary of photography terms
Meaning and definition of lens :
An optical device made of glass or other transparent material that forms images by bending and focusing rays of light. A lens made of a single piece of glass cannot produce very sharp or exact images, so camera lenses are made up of a number of glass "elements" that cancel out each other's weaknesses and work together to give a sharp true image. The size, curvature and positioning of the elements determine the focal length and angle of view of a lens.
For the term lens may also exist other definitions and meanings, the meaning and definition indicated above are indicative not be used for medical and legal or special purposes.
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Glossary of photography terms
Lens
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