The Quantaray AF DI is a macro 70 - 300 mm f/4.0-5.6 lens, making it an excellent tool for photographers looking to capture close-up shots of small subjects. A 70 - 300 mm focal length and a f/4.0-5.6 aperture of this Quantaray camera lens bring welcome flexibility and excellent clarity. Glass elements within this macro camera lens combine to effectively reduce chromatic aberration, and make the Quantaray AF DI capable of a reproduction ratio that's 50 percent of the actual size, while retaining sharp focus at the 300 mm focal length. This expansive range of magnification quickly helps photographers make a maximum impact when shooting material at close range with this 70 - 300 mm f/4.0-5.6 lens. Even with all the magnification power of this Quantaray camera lens, it is remarkably compact. The autofocus setting is very easy to use, and finds subjects efficiently. The wide range of features in the streamlined Quantaray AF DI let photographers capitalize upon the often fleeting moment of a great shot without interrupting their creativity.