All-Round DSLR LensThis lens is designed for DSLR full frame cameras. It features 114 Degree angle of view with "Zero-Distortion", which reduces much time on post-editing. It is very tiny and light when comparing with other DSLR lenses with similar focal length. The 14mm f/4 Canon EF mount is chipped to be automatic in controlling aperture. Users can now control the aperture in-camera and record all the metadata in the EXIF. The lens also has a very short minimum focusing distance i.e. 14.5cm which is capable to create exaggerated perspective and creamy bokeh. 5 bladed aperture renders stunning 10 point sunstars. It is also compatible with 67mm filters.The focusing scale is adjustable for users to fine tune its working distance according to the deviation of the flange range of their own cameras.Wide Angle of ViewThe 14mm f/4 has 114 Degree wide angle of view which enhanced perspective and more objects can be included in the frame.The lens consists of 2 ED and 2 aspherical glasses which eliminates color fringing and improves sharpness.Zero-DistortionThe lens produces close to zero distortion images at the infinity point, which saves much time on post-editing.Close Minimum Focusing DistanceWith 14.5cm minimum focusing distance, photographers are able to create an exaggerated perspective or users can treat it as a "Mini Macro" lens.Aperture Coupling (Nikon F)Saving metadata in