• As part of the Art line within Sigma's Global Vision series, this lens is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.
• Created for full-frame Leica L-mount mirrorless cameras, this lens features Sigma's first f/1.2 maximum aperture, prime lens design to deliver excellent image quality while optimizing size, as well as weight. It is also suitable for APS-C models where it provides a 53mm equivalent focal length.
• Constant f/1.2 maximum aperture is particularly well-suited for working in available light conditions and provides extreme control over depth of field.
• Three Special Low Dispersion (SLD) elements markedly reduce chromatic aberrations and color fringing throughout the zoom range for improved clarity and color accuracy.
• Three aspherical elements, including a double-sided aspherical lens element, control spherical aberrations and distortion for increased sharpness and accurate rendering.
• Large HSM (Hyper Sonic Motor) realizes quick and quiet autofocus. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
• Manual aperture ring can be de-clicked for smooth, silent aperture switching to benefit video applications.
• Built-in Autofocus-Lock (AFL) button which can be assigned additional functions widens the range of operations available on the lens.
• Rounded eleven-blade diaphragm contributes to a smooth and pleasing bokeh quality.
• Front lens element has been treated with a water- and oil-repellent coating to benefit working in harsh environmental conditions.
• Weather-resistant construction with a brass bayonet that affords improved mounting accuracy and rigidity.

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