How to Use focal length in a Sentence

focal length

noun
  • The shorter the focal length, the wider the field of view.
    Jen McCaffery, Popular Science, 21 June 2023
  • The larger the focal length, the smaller the field of view.
    Cameron Johnson, Popular Mechanics, 10 Nov. 2020
  • As the focal length narrows, the lens offers a wider view.
    Stephen J. Beard, USA TODAY, 7 May 2021
  • The location of the image depends on the properties of the lens (the focal length) and the distance from the object to the lens.
    Rhett Allain, Wired, 2 May 2020
  • With a focal length of up to 160mm, the Petzval lens was key for flashback scenes.
    Jazz Tangcay, Variety, 2 July 2022
  • Over time, though, lenses came to be measured by the distance of their focal length.
    Allain Daigle, The Atlantic, 13 May 2018
  • The focal length should be labeled somewhere on the eyepiece.
    Mike Lynch, Twin Cities, 14 Jan. 2024
  • This extra space makes the difference, as the zoom lens can pull off a convincing 2.5x zoom for a focal length of around 65mm.
    Ben Sin, Forbes, 18 Dec. 2022
  • The Pro Max camera boasts a 5x optical zoom, and allows for 120mm focal length.
    Byrachyl Jones, Fortune, 12 Sep. 2023
  • In the larger Pro Max, the extra space allows Apple to step up to a 5x telephoto lens at a 120 mm focal length.
    Andrew Cunningham & Samuel Axon, Ars Technica, 12 Sep. 2023
  • Aperture is measured in f-stops, which is a ratio of the focal length divided by the size of the camera’s opening.
    Maren Estrada, BGR, 5 Aug. 2021
  • For this, use a wide-​angle lens, with a focal length from 14 to 24 millimeters, with your camera on a stable tripod.
    Eric Adams, Popular Mechanics, 15 July 2022
  • This creates enough separation between the lens and the sensor to enable the longer focal length.
    Jay Peters, The Verge, 18 Sep. 2023
  • The illustration shows an eclipse at different focal lengths on a full-frame and a crop-sensor DSLR.
    Michael E. Bakich, Discover Magazine, 24 Feb. 2024
  • The shift from lens width to focal length likely arose in Hollywood for reasons of precision.
    Allain Daigle, The Atlantic, 13 May 2018
  • Lenses with a shorter focal length enabled Galileo to squint at insects as well as planets.
    1843, 2 July 2020
  • As scientists carefully select the focal length of the laser optics, the probe can increase or decrease its rate of speed.
    Discover Magazine, 12 Feb. 2019
  • Fine details may also be captured by using a zoom lens at a medium focal length.
    Deanna Chandra, San Diego Union-Tribune, 13 Nov. 2021
  • Additionally, by blinking, the lenses can change their focal length, which amounts to being able to zoom in and out just as users do on their phones.
    Maria Pasquini, PEOPLE.com, 29 July 2019
  • Wide-angle lenses have a shorter focal length than standard lenses and provide a wider field of view.
    Brandon Russell, Popular Mechanics, 29 Mar. 2023
  • But at the right focal length, the image will be perfectly in focus in both directions, and that gives the cat an extra way of judging distance.
    Helen Czerski, WSJ, 22 Oct. 2021
  • The focal length is 65mm, up from the 52mm offering on the other iPhones with an advanced telephoto offering.
    Jefferson Graham, USA TODAY, 6 Nov. 2020
  • But engineers and DPs also weighed in on color and cinema glass, which was chosen for focal length and weight.
    Michelle Bruton, Forbes, 9 Mar. 2023
  • It’s the focal length (basically the distance the light travels inside the telescope) divided by the aperture.
    Bob Beacham, chicagotribune.com, 9 Apr. 2021
  • Second, smartphone cameras don't have a big enough focal length to really do anything with depth-of-field effects.
    Ron Amadeo, Ars Technica, 18 Apr. 2023
  • More Soft Robots The activated soft elastomer works to increase focal length by as much as 32 percent.
    Daisy Hernandez, Popular Mechanics, 29 July 2019
  • The lens focuses to about 9.8 inches (measured from the sensor) throughout its zoom range, so its largest macro magnification is at the 18mm focal length.
    PCMAG, 6 Feb. 2024
  • But the effect can also be achieved with a DSLR using inexpensive extension tubes that change the focal length of an existing lens.
    A.j. Herrington, Forbes, 25 Feb. 2021
  • There's an Ultra Wide camera, a Telephoto lens with a longer focal length than last year's models, and Wide cameras that take better photos and videos in low-light settings.
    Courtney Linder, Popular Mechanics, 13 Oct. 2020
  • And while the Pro's main wide camera has a bigger sensor and wider focal length, the ultrawide's sensor has doubled in size, the aperture is different, and there are more focus pixels.
    Samuel Axon, Ars Technica, 21 Sep. 2022

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'focal length.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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