Apparently this lens is available in two versions for Nikon. The AF018N-700 does NOT have a built-in autofocus motor. AF018NII-700, yes. If you need autofocus and your camera doesn't have an autofocus motor in the body, make sure you buy a motorized lens. Reading the reviews on this site it seems like people are reviewing two different lenses here, hence the confusion. This lens has no motor. The auto focus works fine with my D300 but not with my D3000.
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