The AF Zoom-Nikkor 70-300mm f/4-5.6G lens will not autofocus on the Nikon D3100 but is otherwise compatible. For lenses that will autofocus look for those with AF-S designation, like the AF-S-VR-Zoom-Nikkor-70-300mm Lens.
For more information on choosing lenses for your D3100 see this article on Nikonusa.com:http://support.nikonusa.com/app/ans...
answered 2 years, 1 month ago
2 years, 1 month ago