Highly portable wide-angle lens with a good price-to-performance ratio. Its light weight of 185g makes it ideal as your standard wide-angle lens. The high-precision aspherical lens minimizes distortion and other aberrations for sharp images with high contrast. - Focal length and maximum aperture: 28 mm 1:2.8. - Lens construction: 5 elements in 5 groups. - Diagonal angle of view: 75°. - Focus adjustment: Overall linear extension system with AFD. - Closest focusing distance: 0.3m / 1ft. - Filter size: 52mm.