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2. Canon EF 400mm lens - Wikipedia

   en.wikipedia.org/wiki/Canon_EF_400mm_lens

   The 400mm f / 4 DO IS II USM, which replaced an earlier version of the same lens in 2014, [3] is one of only two Canon lenses that make use of diffractive optics (the other is the EF 70–300mm f/4.5–5.6 DO IS USM). The use of diffractive optics allows the lens to be significantly lighter than it might otherwise be.

3. Canon EF 100-400mm lens - Wikipedia

   en.wikipedia.org/wiki/Canon_EF_100-400mm_lens

   The EF 100–400 mm f / 4.5–5.6L IS USM is a professional EF mount telephoto zoom lens manufactured by Canon Inc. The first version of this lens was announced in September 1998, and an updated version was announced in November 2014. It is a high performance telephoto lens most often used for sports and wildlife photography.

4. Canon EF 200-400mm lens - Wikipedia

   en.wikipedia.org/wiki/Canon_EF_200-400mm_lens

   The EF 200–400 mm f / 4L IS USM Extender 1.4× is an EF mount super telephoto zoom lens produced by Canon. It is part of the professional L-series and functions with the Canon EOS line of cameras. The EF 200–400 mm lens features an ultrasonic motor, image stabilization and weather sealing. It is the first and only EF lens with a built-in ...

5. The best Canon telephoto lenses in 2022: for your DSLR or EOS ...

   www.aol.com/news/best-canon-telephoto-lenses...

   Pricier than non-stabilized lenses. The Canon RF 100-400mm f/5.6-8 IS USM is designed for EOS R-series full-frame bodies, on which it’s an excellent fit, making for a slimline and easily ...

6. List of superzoom lenses - Wikipedia

   en.wikipedia.org/wiki/List_of_superzoom_lenses

   This is a list of lenses designed for APS-C mirrorless cameras that have an optical zoom ratio greater than 7×. For comparison, the longest superzoom lens designed for DSLRs was the Tamron 18-400mm F3.5-6.3 for EF and F mounts, which had a 22× optical zoom ratio.

7. List of standard zoom lenses - Wikipedia

   en.wikipedia.org/wiki/List_of_standard_zoom_lenses

   There is no precise definition of the term, but lenses marketed as "standard zoom" usually cover a range of at least 30mm to 70mm in terms of 35mm equivalent focal length with an optical zoom ratio of 2.5× (e.g. 28-70mm) to 5× (e.g. 24-120mm) — the most common being 3× (e.g. 24-70mm). [1]