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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 "fixed focus"?

Fixed focus refers to a type of lens that can not adjust its focal point, the distance where images appear sharp and in focus. Fixed focus lenses rely on their typically large depth-of-field in order to ensure that most commonly photographed subjects are reasonably in focus. A fixed focus lens will sometimes be designed to have a bias toward either portrait or landscape/scenery photographs. Mobile phones are typically biased a bit towards portrait photography. Fixed focus cameras sometimes have a manual macro mode that enables them to photograph subjects that are quite close to the lens.

See Also: focal point

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