The lens like many other nikon lenses comes with an autofocus motor which his built in and the body of the lens includes a distance scale as well the lens is made of a lot of plastic but thankfully the lens mount is made of quality metal this is one of the best lenses for nikon d3100 as it is weatherproof as well the rubber lens mount . Older lenses that were manual focus like the legacy nikon f mount lenses had brilliant optics and control but no brain unlike modern lenses that are chipped they couldnt digitally communicate with the camera so there was no af and couldnt even speak automatically to the cameras to tell them what aperture they were at and what focal length so metering properly was non existent. Lightdow 420 800mm f 83 manual zoom telephoto lens t mount for nikon d5500 d3300 d3200 d5300 d3400 d7200 d750 d3500 d7500 d500 d600 d700 d800 d810 d850 d3100 d5100 d5200 d7000 d7100 camera lenses. Amazoncom nikon manual focus lenses skip to main content try prime en hello sign in account lists sign in account lists returns orders try prime cart all go search hello select your address best sellers customer service new releases find a gift whole foods registry gift cards sell amazonbasics founditonamazon free shipping shopper toolkit disability customer support 1 16 of 247
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