Sigma 28-45mm f/1.8 DG DN Art Lens: The World’s Brightest Full-Frame Zoom

Sigma unveils the 28-45mm f/1.8 DG DN Art Lens for Leica L-mount, the first-ever full-frame mirrorless zoom lens to feature a constant f/1.8 aperture throughout its entire range. Delivering prime-like optical quality and video-centric features, this lens covers a versatile wide-to-normal focal range, offering creative flexibility without compromising image excellence.

Key Features:

Exceptional Optical Design:

• Advanced Element Configuration: 18 elements in 15 groups, including three aspherical elements and five Special Low Dispersion (SLD) elements, to suppress aberrations, flare, and ghosting for unmatched clarity and detail.
• Prime-Level Sharpness: Achieves optical performance comparable to Sigma’s Art primes, with crisp resolution and minimal distortion.
• Smooth Bokeh: The 11-blade rounded diaphragm ensures smooth and creamy bokeh, enhancing subject isolation and depth.
• Close Focusing Distance: Maintains an 11.9" minimum focusing distance across the zoom range, enabling detailed close-ups with a 1:4 maximum magnification ratio at 45mm.

Engineered for Video Production:

• Bright Aperture for Versatility: The constant f/1.8 aperture supports low-light shooting and cinematic depth-of-field control, ideal for run-and-gun filmmaking.
• Focus-Breathing Suppression: Ensures smooth transitions across the focal range for professional-quality video capture.
• Internal Zoom Design: Keeps the lens length constant during zooming, making it perfect for gimbal use.
• Precise Autofocus: Equipped with a high-speed linear actuator for quiet and accurate AF performance, while manual focus benefits from click and lock mechanisms for enhanced control.
• Customizable Focusing: Features adjustable focus ring settings, allowing users to switch between linear and non-linear modes, with rotation angles ranging from 90° to 720° for intuitive manual adjustments.

Professional Build & Features:

• Dual AFL Buttons: Assignable buttons for added customization and operational ease.
• Focus Mode Switch: Instantly toggle between autofocus and manual focus as needed.
• Advanced Coatings: Features Super Multi-Layer and Nano Porous Coatings to reduce reflections, and water- and oil-repellent coating on the front element for durability.
• Rugged Construction: A dust- and splash-resistant design ensures reliable performance in challenging environments.
• Durable Mount: Built with a robust brass bayonet for long-lasting precision and strength.

The Sigma 28-45mm f/1.8 DG DN Art Lens redefines possibilities with its constant bright aperture, cutting-edge optics, and video-friendly features, making it an essential tool for photographers and filmmakers seeking unmatched flexibility and quality.