![]() Or, in other words, because AF-S NIKKORs have the focus motor built into the lens, they can be used on any current Nikon camera body, whether the body has a focus motor or not, because the lens itself controls the focusing function.Ĭonsumer level Nikon digital SLR cameras are designed without built-in focus motors, which allow them to be smaller and lighter than the larger, more professional models. The DSLR camera bodies that do feature a focus motor can utilize AF and AF-S lenses. This enables high-speed autofocusing that's extremely accurate and super quiet.ĪF-P lenses use a “Pulse” motor or “Stepping” autofocus motor and are even quieter and smoother to autofocus than an AF-S lens, making these lenses ideal when shooting video with a DSLR. This technology converts “traveling waves” into rotational energy to focus the optics. On several Nikon DSLR camera bodies, the focus motor is in the camera and a series of gears drives the lens' focusing mechanism, which allows the lens to focus.ĪF-S NIKKOR lenses feature Nikon’s Silent Wave Motor (SWM). AF NIKKOR lenses use a mechanical coupling between the lens and the camera body. ![]()
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