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1. www.howtogeek.com › 169552 › what-do-all-the-lettersWhat Do All The Letters, Acronyms, and Numbers on My Camera ...

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   A quick peek at the barrel of your camera's lens reveals a jungle of letters, numbers, and acronyms.

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3. photo.stackexchange.com › questions › 74876What is Nano USM and how does it compare to an STM or USM lens?

   photo.stackexchange.com › questions › 74876

   Feb 19, 2016 · Canon's Nano USM focusing motors have so far been used in the EF 18-135mm f/3.5-5.6 IS USM and EF 70-300mm f/4-5.6 IS II USM lenses. It is a type of AF motor that, like Ring USM, uses micro-piezo vibrations to move the lens focus elements.

4. photo.stackexchange.com › questions › 496What do all those cryptic number and letter codes in a lens ...

   photo.stackexchange.com › questions › 496

   Jul 16, 2010 · There's the original "XYZ f/1.2.3" lens and then a later "XYZ f/1.2.3 II" lens if the lens has the same focal length (s), maximum aperture (s), and AF type. There's the original EOS xxxxD camera body and then a subsequent xxxxD Mark II camera body.

5. photo.stackexchange.com › questions › 16951lens - What is USM, and what are its pros and cons ...

   photo.stackexchange.com › questions › 16951

   Nov 10, 2011 · What does this mean, and why or why do I not want it? USM uses Ultrasonic wave to move the lens quicker to achieve more precise focusing. Unlike the traditional old fashion magnetic lens, USM is quieter and less friction during the lens movement, thus it does not waste energy/battery by creating human audible noise.

6. www.lightroompresets.com › blogs › pretty-presetsUnderstanding Camera Lenses (Numbers, Letters & Symbols ...

   www.lightroompresets.com › blogs › pretty-presets

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   May 2, 2022 · What do all those different numbers, letters & symbols on your camera lens mean? Find out here, in this EASY to understand guide to camera lenses.

7. www.dpreview.com › forums › threadWhats the difference between USM, USM II, and USM III

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   Sep 30, 2004 · The best type is ring USM. This is found in higher end lenses and is typically faster focusing and offers full-time manual focusing.

8. People also ask

   Which lenses have aperture control ring?

   • Fujifilm: R lenses (having the letter "R" immediately after the maximum aperture designation) have an aperture control ring on the lens. Some manufacturers have a code to indicate their high-end lenses: Sigma: EX Professional EXternal lens body finishing.

   What do all those cryptic number and letter codes in a lens name mean?

   photo.stackexchange.com/questions/496/what-do-all-those-cryptic-number-and-letter-codes-in-a-lens-name-mean

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   How does a camera focus ring work?

   • Rather, the focus ring transmits a set of electronic instructions to the camera body which in turn sends electronic instructions to the lens to move the focus elements using the same motor as when the camera is focusing the lens automatically.

   canon - What is Nano USM and how does it compare to an STM or US…

   photo.stackexchange.com/questions/74876/what-is-nano-usm-and-how-does-it-compare-to-an-stm-or-usm-lens

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   Does a G Lens have an aperture control ring?

   • Nikon: G lenses (having the letter "G" immediately after the maximum aperture designation) do not have an aperture control ring on the lens. Fujifilm: R lenses (having the letter "R" immediately after the maximum aperture designation) have an aperture control ring on the lens. Some manufacturers have a code to indicate their high-end lenses:

   What do all those cryptic number and letter codes in a lens name mean?

   photo.stackexchange.com/questions/496/what-do-all-those-cryptic-number-and-letter-codes-in-a-lens-name-mean

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   What does mm mean on a lens?

   • So when you see "mm" following a number or a pair of numbers on a lens, you will know that the number refers to the focal length (single number) or focal range (pair of numbers). Focal length is what you see when you look through your camera viewfinder. The lower the focal length (smaller number), the more you will see in your image (wider view).

   Understanding Camera Lenses: Numbers, Letters & Symbols Explained

   www.lightroompresets.com/blogs/pretty-presets-blog/understanding-camera-lens-numbers-letters-symbols-explained

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   What is the difference between USM and traditional magnetic lens?

   • Unlike the traditional old fashion magnetic lens, USM is quieter and less friction during the lens movement, thus it does not waste energy/battery by creating human audible noise. By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy. Not the answer you're looking for?

   lens - What is USM, and what are its pros and cons? - Photography Stack

   photo.stackexchange.com/questions/16951/what-is-usm-and-what-are-its-pros-and-cons

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   What is the aperture range of a zoom lens?

   • In some cases with zoom lenses, you will see two numbers following the "1:", as in the example below, which shows an aperture range of 1:3.5-4.5. The aperture changes with the zoom's focal length between f/3.5 and f/4.5.

   Understanding Camera Lenses: Numbers, Letters & Symbols Explained

   www.lightroompresets.com/blogs/pretty-presets-blog/understanding-camera-lens-numbers-letters-symbols-explained

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9. www.whatdigitalcamera.com › roundup › lens-roundupWhat are the sharpest lenses for each camera system?

   www.whatdigitalcamera.com › roundup › lens-roundup

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   Aug 9, 2016 · Sigma’s 50mm f/1.4 DG HSM Art and the Zeiss Otus 55mm f/1.4: two of the sharpest lenses currently available. A question often posed by photographers is: ‘What’s the sharpest lens I can buy for my camera?’. In reality this can only properly be answered by examining lens tests that have been carried out in a reliable and repeatable way.