The Sigma 60-600mm f/4.5-6.3 DG DN OS Sports lens promises to be one of the most versatile lenses you can own, covering a huge focal length range and making it an appealing option for sports, bird, and wildlife photographers. With such an extreme focal length range, you might wonder if it can keep up with the performance and image quality demands of professional photographers. This great video review takes a look to answer that question.