Super wide-angle zoom with constant aperture of F4 - Maximum aperture of F4 across focal length range. - Go super wide with minimum focal length of 10mm. - Image stabilisation enhances low-light shooting. - Experiment with space and perspective - a minimum focal length of only 10mm lets you capture striking interior shots as well as dramatic landscapes. - Enjoy greater creative control - because the F4 maximum aperture remains unchanged even when zooming, you can adjust depth of field more freely. - Noise-free shots even in low light - with a constant maximum aperture of F4, you can use fast shutter speeds without raising ISO sensitivity unnecessarily. - Precise, high quality images - three aspherical lens elements minimise spherical aberration and distortion, with less bleed even at maximum aperture. - Capture beauty in the blur - the signature circular aperture helps create beautifully smooth, rounded blur on the out-of-focus elements in a shot. - Rich image quality with Super ED glass - Super Extra-Low Dispersion glass reduces chromatic aberrations to sharpen image quality even at the 10mm focal length. - Built-in image stabilisation - when shooting hand-held, particularly night scenes or dimly lit interiors, Optical SteadyShot enables detailed, blur-free results.