Feature:1. With f4 bright and large aperture for better achieving background blurred and subject highlighted effects.2. About 120° ultra-wide diagonal angle for collect the vast landscape and giant structures, easier to show a grand and solemn atmosphere.3. Adopts optical lens and multilayer coating technology to effectively increase light transmittance and minimize backlight ghost image and glare.4. With 12 elements in 9 groups structure, low distortion image quality, and the camera can be smoothly manual adjusted by the foucsing ring.5. Comes with hard camera case, to protect camera from easily scratched and water and dust, more convenient for storage and carry.6. Premium metal mount for easy mounting, corrosion resistance and durable for long service life.Specification:Features:With f4 bright and large aperture for better achieving background blurred and subject highlighted effects.About 120° ultra-wide diagonal angle for collect the vast landscape and giant structures, easier to show a grand and solemn atmosphere.Adopts optical lens and multilayer coating technology to effectively increase light transmittance and minimize backlight ghost image and glare.With 12 elements in 9 groups structure, low distortion image quality, and the camera can be smoothly manual adjusted by the foucsing ring.Comes with hard camera case, to protect camera from easily scratched and water and dust, more convenient for storage and carry.Premium metal mount for easy mounting, corrosion resistance and durable for long service life.Specifications:Color: BlackType:(Optional)Type 1: Compatible with NikonType 2: Compatible with CanonMain Material: OpticalFocal Length: 15mmAperture: f4-f32Field Angle: 120 degree diagonalStructure: 12 elements in 9 groupsMin. Focusing Distance: 0.12m / 4.72inFilter Diameter: 7.7cm / 3.03inLens Structure: 12 elements in 9 groupsItem Size: 12 * 10.8cm / 4.72 * 4.25in--Type 1Compatibility: Compatible with Nikon D7100, D7200, D90, D600, D3000, D5000, D40, D50, D300, D200Package Size: 18.5 * 12 * 10cm / 7.28 * 4.72 * 3.94inPackage Weight: 635g / 22.40oz--Type 2Compatibility: Compatible with Canon 50D, 60D, 70D, 80D, 7D, 6D, 1200D, 700D, 750D, 6D2Package Size: 18.5 * 12 * 10cm / 7.28 * 4.72 * 3.94inPackage Weight: 655g / 23.10ozPackage List:1 * Camera Lens1 * Camera CasePackage List:1 * Camera Lens1 * Camera Case