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2. List of Nikon F-mount lenses with integrated autofocus motor

   en.wikipedia.org/wiki/List_of_Nikon_F-mount...

   All Nikon zoom AF-lenses have focal length encoders added. Nikon AF-P: The lens contains a pulse motor (utilizing stepping motors) to focus smoother and quieter than previous drive systems. Nikon AF-I, Sigma/Tamron/Tokina: no designation: The lens contains an integrated focus electric motor. The Nikon type was produced from 1992 to 1996 and is ...

3. Sigma 24mm F1.4 DG HSM Art - Wikipedia

   en.wikipedia.org/wiki/Sigma_24mm_F1.4_DG_HSM_Art

   The Sigma 24mm F1.4 DG HSM Art is an interchangeable wide angle lens for full frame cameras. It was announced by Sigma Corporation on February 10, 2015. A full two stops faster than most 24mm primes, it is designed to capture wide angle imagery with shallow depth of field, as one might with a medium or large format camera.

4. Samyang 24mm f/1.4 ED AS UMC - Wikipedia

   en.wikipedia.org/wiki/Samyang_24mm_f/1.4_ED_AS_UMC

   The Samyang 24mm f/1.4 ED AS UMC is an interchangeable wide-angle prime lens for cameras with full frame or smaller sensors. It was announced by Samyang on August 12, 2011. [ 1 ]

5. Lens speed - Wikipedia

   en.wikipedia.org/wiki/Lens_speed

   Old fast manual focus lenses, such as the Nikkor-S(C) or Nikkor AI-S 50mm f / 1.4, or Canon's FD and M39 counterparts, were historically produced abundantly, and are thus sold relatively inexpensively on the used lens market. Especially outside of the "normal" focal length, lens speed also tends to correlate with the price and/or quality of the ...

6. Nikon F-mount - Wikipedia

   en.wikipedia.org/wiki/Nikon_F-mount

   The Nikon F-mount is a type of interchangeable lens mount developed by Nikon for its 35mm format single-lens reflex cameras.The F-mount was first introduced on the Nikon F camera in 1959, and features a three-lug bayonet mount with a 44 mm throat and a flange to focal plane distance of 46.5 mm.

7. Sigma 12-24mm f/4.5-5.6 lens - Wikipedia

   en.wikipedia.org/wiki/Sigma_12-24mm_f/4.5-5.6_lens

   It has since been surpassed by the Canon EF 11-24mm f/4L zoom lens and the Irix 11mm f/4, a manual focus prime lens. [2] The Sigma 12-24 has low distortion even compared to less wide zooms like the Canon EF 16-35mm lens. [3] This lens is available in Canon, Nikon, and Sigma, Pentax, and Sony mounts.