This is the standard telephoto lens for the NC series cameras. Most people who bought the camera with a standard lens added a 28 mm wide-angle and a 135 mm telephoto lens to their system. That´s why these lenses are quite easily available on the used market at a relative low price (you can get a mint one for approx. US$ 50).
The performance of this lens is excellent. It is one of the best lenses available for the NC series. It is very contrasty and delivers excellent sharpness already wide open. This is very important for a telephoto lens since it is used wide open most of the time for faster shutter speeds and beautiful background blurr when shooting portraits.