A lens is an optical device that uses refraction to focus or disperse a beam of light. Lenses are used in telescopes, binoculars, microscopes, cameras, and eyeglasses. Different types of lenses can serve different kinds of purposes. For example, a zoom lens, a wide-angle lens, and a telephoto lens each light differently to achieve different effects.

Can you try on different lenses to view the situation differently? Do you need to focus more deeply on a topic? See more detail farther away? Sharpen the image? Do you need a wider angle? How can a lens help you clarify the situation?

See also: Prism, Altitude.


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