I'm using a Nikon D3000. I'm having a problem with one of the lenses that I'm using. It fits my camera but its completely manual. What's wrong? It says around the lens ring "Formula 5 Gold Crown MC 1:35 75-205mm" I've had it for awhile and it worked fine on some of my other cameras in the past. However with this camera all the pics are blurry, like this pic. This pic is taking with my AF-S Nikkor 18-55mm 1:3.5-5.6GII ED. I'm approximately the same distance away.