VERDICT

Look through the viewfinder when using Sigma’s 8-16mm lens, and the greater viewing angle than on a typical 10-20mm or 10-24mm lens is dramatic, while distortions are kept to a minimum. For an even more wrap-around, extreme viewing angle with the classic fisheye effect, there’s no beating a fisheye lens, and the Nikon’s wider maximum aperture can be more convenient for low-light shooting.