The NiSi 9mm f/2.8 Sunstar Super Wide Angle ASPH Lens is an APS-C high-quality, professional lens that is perfect for anyone looking to get into wide-angle photography. With a 113 Degree field of view and 14 elements in 12 groups, this lens provides precise optics and minimal distortion, making it a great choice for landscape and architectural photography. The aperture range of f/2.8 to f/16 also makes it a great option for astrophotography, as it is resistant to flares and has low coma. Weighing only 364g/12.8oz, this lens is incredibly compact and easy to carry, making it a great choice for travel photography. Looking for a super wide angle lens that will allow you to capture breathtaking sunstars? This lens has a 113 Degree field of view and offers beautiful sunstars from f/2.8 to f/16. It also features a compact metal construction, precise optical design, and minimal distortion and vignetting. Plus, the 67mm standard filter thread makes it compatible with the NiSi 100mm filter system and 67mm circular filters. With the yellow weather seal at the mount, you can be sure your photos will be protected against the elements. The NiSi 9mm f/2.8 Sunstar Super Wide Angle ASPH Lens is an ideal choice for photographers who want to capture beautiful images in any condition.