Examples of focal length in a Sentence
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Distortion is also impressively low for such an ultra-wide focal length.
—
Tantse Walter, Space.com, 18 Feb. 2026
That effect can bring a sense of depth to images, but seeing a full picture clearly typically requires you to combine multiple photographs that were shot at different focal lengths.
—Jess Weatherbed, The Verge, 29 Dec. 2025
The depth of field is influenced by the interplay of the aperture, the focal length of the lens, and the position of the subjects within the scene.
—Scott Gilbertson, Wired News, 15 Nov. 2025
In their experiments, the researchers showed that the plasma lens could focus light across a wide range of XUV wavelengths, with its focal length adjustable by tuning the plasma density.
—Neetika Walter, Interesting Engineering, 5 Nov. 2025
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Tantse Walter, Space.com, 18 Feb. 2026
That effect can bring a sense of depth to images, but seeing a full picture clearly typically requires you to combine multiple photographs that were shot at different focal lengths.
—Jess Weatherbed, The Verge, 29 Dec. 2025
The depth of field is influenced by the interplay of the aperture, the focal length of the lens, and the position of the subjects within the scene.
—Scott Gilbertson, Wired News, 15 Nov. 2025
In their experiments, the researchers showed that the plasma lens could focus light across a wide range of XUV wavelengths, with its focal length adjustable by tuning the plasma density.
—Neetika Walter, Interesting Engineering, 5 Nov. 2025
See All Example Sentences for focal length
Cite this Entry
“Focal length.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/focal%20length. Accessed 3 Mar. 2026.
Copy CitationMedical Definition
focal length
noun
: the distance of a focus from the surface of a lens or concave mirror
—symbol f
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