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Our online glossary is here to help you make sense of the terminology used in the cell phone industry. It covers mobile technologies, such as 3G and 4G, and even includes a bit of information on smartphone operating systems and the companies that make the cell phones and other mobile technology devices we all use.

What is "telephoto"?

Telephoto, when speaking of cameras, refers to a higher magnification lens that is able to direct a narrow but magnified view of a scene to the camera's image sensor. What focal length lenses pass for telephoto depends on the size of the sensor used in the camera. Typically a lens with a 80mm or longer focal length will be considered telephoto on a 35mm film camera.

See Also: focal length

Referred to by: focal length, optical zoom

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