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Lenses are made from materials such as glass or plastic and are ground, polished, or molded to the required shape. A lens can focus light to form an image, unlike a prism, which refracts light …

At a very basic level, lenses allow you to focus light onto a sensor or film and produce a clear and sharp image of the scene in front of you. Lenses also let you adjust exposure, modify the …

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Oct 26, 2025 · Single lenses are used in eyeglasses, contact lenses, pocket magnifiers, projection condensers, signal lights, viewfinders, and on simple box cameras. More often a number of …

Mar 27, 2025 · An easy-to-follow explanation of how lenses bend light, including the two main types of lenses: concave and convex.

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