The Rokinon 14mm Ultra-Wide-Angle f/2.8 lens is designed to provide a dramatic 115.7° view on full frame cameras.and is perfect for astrophotography, landscapes and real estate imagery. It also works well with DSLR and Mirrorless cameras to provide approximately an angle of view of 94° with APS-C cameras, 90° with Canon APS-C cameras and 76° with Micro 4/3 cameras The advanced 14 element 10 group design focuses to a close 11" (0.28mm) to produce sharply defined images with a minimum of distortion and chromatic aberrations. It utilizes 2 ED elements, 1 Hybrid Aspherical element, 3 High Refractive Index elements, and one glass Aspherical element, for outstanding, sharply defined rectilinear images. This ultra-wide-angle Rokinon utilizes Ultra Multi Coating to reduce flare and ghost images, Includes a built-in petal-type lens hood and comes in mounts for: Canon EF, Nikon F, Sony E, MFT, Sony A, Pentax K and Fuji X.Focal Length: 14mm. Mounts : Canon: FE14M-C, Nikon AE: FE14AF-N. Pentax K: FE14M-P. Sony a: FE14M-S, Fuji X: FE14M-FX, Samsung NX: FE14M-NX, Sony E: FE14M-E, Four Thirds: FE14M-O, Micro 4/3: FE14M-MFT, Canon AE : AE14M-C. Maximum Diameter: 3.4”(87mm). Aperture Range: F2.8 to F22. Lens has a minimum focusing distance of 0.9' (28 cm) for enhanced close-up shots. Lens includes a built-in petal-type lens hood.Do not soak the lens in water, and avoid water splashing onto the lens. Ultra wide-angle 14mm lens with an approximately 90° angle of view using an APS-C camera, for dramatic effects.Lens Fixed Focal Length: 14 Millimeters. Focus Type: Manual Focus. Lens Design: Prime. Minimum Focal Length: 14 Millimeters. Maximum Focal Length: 14 Millimeters. Camera Lens Description: 14 month. Compatible Mountings: Canon EF. Lens Type: Wide Angle. Focal Length Description: 3.78”. Brand: Rokinon. Country of Origin: USA. Manufacturer: Rokinon. Department: Electronics. Date First Available: July 14, 2010. Is Discontinued By Manufacturer: No. Best Sellers Rank: #47 in SLR Camera Lenses. Customer Reviews: 4.4 out of 5 stars 1,504 ratings 4.4 out of 5 stars. Item model number: 134345789. : B003VSGQPG. Item Weight: 1.22 pounds. Product Dimensions: 3.78 x 3.43 x 3.43 inches.