The Samyang 35mm Aspherical Wide Angle Lens is an excellent addition to any photographers collection. It allows users the ability to expand their creativity and capture incredible scenery. This manual focus lens creates images with an expanded perspective with sharp focus that extends throughout the entire frame. Optical construction is based on 12 elements in 10 groups including one aspherical lens that prevents horizontal chromatic aberration. Advanced optical construction allows this lens to deliver razor sharp images even in corners. The lens is optically corrected which is especially useful in architecture and landscape photography and the 63.1 degrees angle of view allows the user to create extremely unique pictures. This version of Samyangs 35mm lens also incorporates an automatic diaphragm and features contacts that allow the lens to communicate with your Nikon SLR camera. This enables the A S and P exposure control modes of the camera and although focusing is manual the camera will indicate when a subject is focused correctly in your viewfinder. You can enjoy more convenient photography with these functions.