: the distance of a focus from the surface of a lens or curved mirror
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Four of them have a short focal length, which translates to a relatively wide field of view, while the other two have a longer focal length.—Mike Wall, Space.com, 13 Mar. 2025 Also, instead of a dedicated telephoto lens, the camera digitally crops into the 48MP sensor to create an optical-quality 2x zoom, effectively giving you a second focal length without adding a physical lens.—Jennifer Jolly, USA TODAY, 28 Feb. 2025 The focal length is a short telephoto for the sensor size, with an angle of view that's just about the same as an 85mm full-frame prime.—PCMAG, 5 Mar. 2025 The lens also has a focal length of 35mm, which is a more optimum focal length for photography.—Ben Sin, Forbes, 3 Mar. 2025 See All Example Sentences for focal length
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