http://www.nikonchat.com/nikkor-dc-105mm/

No AF DC-Nikkor 105mm lens f/2D have built in AF motor in camera without engine and D5000?
thanks
Has not an internal motor. Only AF-S and AF-I have a motor on them. You have all measurement functions with the lens in a D5000, but will have to manually focus the lens, Like most portrait photographers in any case. Since you are investing in a lens of more than $ 1,000, is there a reason why you must not only choose the Nikon D90 as the camera body of choice? D5000 $ 630 Nikon D90 body only $ 805 Nikon body only for $ 170 more, avoid all the auto-focus, smooth autofocus, which surrounds the old lens designs. You may have noticed that little by little Nikon is updating all their lenses AF popular AF-S lenses. This is because the AF-S lenses are ultra-fast autofocus lenses favored by many editorial and sports photographers