This ultra wide-angle Sigma 24mm f/2 DG DN Contemporary I Series lens is designed for the Leica L-mount full frame mirrorless cameras. As part of the Contemporary line, this lens is designed with convenience and performance in mind. Its ultra wide focal length pairs with a fast design in a portable form, rendering it suitable for a wide array of photographic applications, such landscape, nature, interior, architectural photography and even shooting the night sky. The bright f/2 maximum aperture supports shooting in dimmer conditions as well as improves shallow depth of field control while a 24.5cm minimum focusing distance enables working up-close with subjects. Optically, two Special Low Dispersion (SLD) elements and one F Low Dispersion (FLD) element are employed to correct axial chromatic aberration so that the imagery is sharp and more accurately rendered. Additionally, application of a Super Multi-Layer Coating helps to minimise ghosting and flare to improve colour fidelity and contrast. The lens features a stepping motor to deliver fast and quiet autofocus performance that benefits both stills and video applications while an inner focus system increases stability, As an I Series lens, it is characterised by a sleek and stylish physical design, and features a newly designed arc-type auto/manual focus switch, a mechanical aperture ring and an all-metal barrel construction for enhanced tactility. Rubber sealing at the lens mount protects the mount from dust and water droplets. A nine-blade diaphragm provides for a pleasing bokeh. This lens comes supplied with a lens cap, a rear cap, a magnetic metal lens cap and a petal lens hood. A separately available Sigma UD-11 USB Dock can be used to update the lenss firmware and fine-tune different different lens characteristics.
