The 10 mm / 1: 5.6 Hyper Wide Heliar for full-frame cameras, covers an angle of view of fabulous 130 degrees and still remains almost distortion-free. It delivers crisp image results right down to the corners and shows up even with a completely closed aperture of F22 not prone to diffraction effects.The 375 gram lightweight lens uses a noble metal tube 13 lenses are used in 10 groups, the near limit is 30 cm. Ten aperture blades provide a circular opening and a very harmonious blur.Especially recommended for videographers: The Hyper Wide Heliar offers a selective iris control system, with which the opening can be adjusted continuously on request. This makes the fade-in or fade-out when turning particularly quiet and flowing.