Examples of focal length in a Sentence
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Longer focal length usually indicates sharper eyesight, so this was one sign that humpbacks may have poor vision.
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Margherita Bassi, Smithsonian Magazine, 21 May 2025
The lens delivers outstanding resolution throughout its zoom range with stunning clarity right up to the edge of the frame at every focal length I tried—10mm, 14mm, and 18mm (3,000-3,500 lines).
—PCMAG, 2 Dec. 2024
The other cameras onboard include a 1-inch type main camera with a 23mm focal length, a 15mm ultra-wide camera, and a 32-megapixel front-facing selfie camera.
—Ben Sin, Forbes.com, 8 May 2025
Key features: 76 mm) aperture, 300 mm focal length, f/3.95 focal ratio, Dobsonian mount, 4.3 lbs.
—Chris McMullen, Space.com, 6 May 2025
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Margherita Bassi, Smithsonian Magazine, 21 May 2025
The lens delivers outstanding resolution throughout its zoom range with stunning clarity right up to the edge of the frame at every focal length I tried—10mm, 14mm, and 18mm (3,000-3,500 lines).
—PCMAG, 2 Dec. 2024
The other cameras onboard include a 1-inch type main camera with a 23mm focal length, a 15mm ultra-wide camera, and a 32-megapixel front-facing selfie camera.
—Ben Sin, Forbes.com, 8 May 2025
Key features: 76 mm) aperture, 300 mm focal length, f/3.95 focal ratio, Dobsonian mount, 4.3 lbs.
—Chris McMullen, Space.com, 6 May 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 16 Jun. 2025.
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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