Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great addition to your lens collection

The Kenko 2x teleconverter lens is indeed a great addition to your Nikon DSLR camera. I have taken some great photos with this attachment. I use it on my Nikkor 55-200mm lens. The only reason I tack one star off is because at times, the camera body doesn't recognize the lens being connected. A nice twist of the lens usually fixes that problem, however it is a slight inconvenience. Also, auto focus is somewhat difficult to achieve (even in broad daylight) so I use it manually.The price can't be beat and it does the job.