Sigma 10mm f/2.8 EX DC HSM Fisheye Lens for Nikon Digital Cameras
Sigma's 10mm f2.8 is an excellent fisheye lens with a 180 degree perspective and a wide aperture. Subjects can be as close as .7 inches from the very front of the lens, thanks to the 5/3 minimum focusing distance and 1:3.3 magnification. And while most fisheye lens don't allow for filters, a gelatin holder at the back of the lens still allows for colored filters. A built-in hood combined with lens coatings helps to reduce flare and ghosting. Sigma also designed this lens with a seven blade aperture and a quiet autofocus motor. Sigma is also an excellent option for saving a few bucks on equipment.