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Examples of focal length in a Sentence
Recent Examples on the Web
The 28-300mm's OIS is effective enough to support crisp handheld exposures at 1/8-second exposure time at the 300mm focal length.
—PCMAG, 11 Dec. 2024
Its inner barrel telescopes out to zoom in to tighter focal lengths, extending by about an inch.
—PCMAG, 2 Dec. 2024
Many cameras and smartphones look at life through a single lens, but three dimensional depth maps can be created using information hidden in metadata of 2D photos (such as focal lengths and sensor info) or estimated using multiple images.
—Paul Ridden, New Atlas, 14 Oct. 2024
Here are some starting points for capturing Comet A3.
Use an 18-55mm wide-angle lens at different focal lengths, with long exposures for about 10 to 20 seconds and ISO 1600.
—Jamie Carter, Forbes, 27 Sep. 2024
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Word History
First Known Use
1682, in the meaning defined above
Dictionary Entries Near focal length
Cite this Entry
“Focal length.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/focal%20length. Accessed 21 Dec. 2024.
Kids Definition
focal length
noun
: the distance of a focus from the surface of a lens or inwardly-curved mirror
Medical Definition
focal length
noun
: the distance of a focus from the surface of a lens or concave mirror
—symbol f
More from Merriam-Webster on focal length
Britannica.com: Encyclopedia article about focal length
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