SIGMA 17-40mm f/1.8 DC Art Lens for Fujifilm X Mount

About This Item

• Constant f/1.8 Maximum Aperture: The SIGMA 17-40mm f/1.8 DC Art is a next-generation zoom lens that offers a remarkably bright f/1.8 aperture throughout its entire range. This provides the low-light performance and shallow depth-of-field of a prime lens with the incredible flexibility of a zoom.
• Art-Series Optical Excellence: Engineered for high-resolution APS-C mirrorless cameras, the optical design features 17 elements in 11 groups, including 4 SLD and 4 aspherical elements. It delivers stunning edge-to-edge sharpness and effectively suppresses chromatic aberration and coma flare.
• HLA High-Response Linear Actuator: Equipped with SIGMA’s advanced HLA linear motor, the lens provides lightning-fast, silent, and highly accurate autofocus. This ensures you never miss a moment, whether you're shooting high-speed action or recording professional cinematic video.
• Optimized for Video Production: Designed with creators in mind, the lens features an internal zoom mechanism to maintain a constant length—perfect for gimbal stability. It also minimizes focus breathing, providing smooth and consistent framing during focus pulls.
• Professional Tactile Control: Features a dedicated aperture ring with a click/de-click switch, allowing for tactile, stepped control for photos or smooth, silent transitions for video. It also includes two customizable AFL buttons and a focus mode switch for instant access to your settings.
• Rugged and Portable Design: Despite its large aperture, this lens is over 30% lighter than its DSLR predecessors. The dust- and splash-resistant structure, combined with a water- and oil-repellent coating on the front element, ensures reliable performance in demanding environments.

Product Specifications

• Model: A025 (Art Line)
• Focal Length: 17-40mm (25.5-60mm Full-Frame Equivalent)
• Maximum Aperture: f/1.8 (Constant)
• Minimum Aperture: f/16
• Lens Construction: 17 elements in 11 groups (4 SLD, 4 Aspherical)
• Aperture Blades: 11 (Rounded diaphragm)
• Minimum Focus Distance: 28cm / 11.1 in.
• Filter Size: φ67mm
• Weight: 525g / 18.5 oz.