High-performance Diagonal Fisheye Lens with 180° field of view. The focal length is equivalent to 16mm on a 35mm camera, and the focusing range is incredible with a working distance down to 2cm from the lens front. With great depth of field, exaggerated perspective and extreme deformation, the marvelous image of fisheye lens make your image world broaden. ED lens greatly reduce chromatic aberrations to provide the highest image quality with high resolution and contrast.