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2. 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.

3. Canon EF lens mount - Wikipedia

   en.wikipedia.org/wiki/Canon_EF_lens_mount

   Number of Canon EF lenses sold over time (red), compared with Nikon F mount lenses (blue) The EF mount replaces its predecessor, the FD mount.The standard autofocus lens mounting technology of the time used a motor in the camera body to drive the mechanics of the focus helicoid in the lens by using a transfer lever.

4. 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.

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

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

   Get incredible reach without breaking the bank with this Tamron 100-400mm. Mount: Canon EF | Full-frame compatible ... Lens hood costs extra. The Canon EF-S 55-250mm f/4-5.6 IS STM is one of the ...

6. 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 ...

7. Canon RF lens mount - Wikipedia

   en.wikipedia.org/wiki/Canon_RF_lens_mount

   Canon full-frame cameras have used the EF lens mount since 1987. In comparison with that mount, the RF mount's inner diameter is the same at 54 mm. [1] The RF mount's flange focal distance at 20 mm is much shorter than that of the Canon EF and EF-S mounts at 44 mm.