Ultra-wide 100° picture coverage with edge-to-edge sharpness. Bright f/3.5 maximum aperture insures rapid composing and accurate, pinpoint focusing even in dim light. Close-Range Correction System gives close focus down to 0.25m (0.82 ft.) without any loss of sharpness. Extremely wide field coverage, depth of field, and freedom from distortion make this lens an excellent choice for architectural and scenic photography as well as for picture taking in cramped quarters. Retailed for over £1400 and in great demand by precision photographers requiring the control offered by manual lenses.