Sigma 18-35mm f/1.8 DC HSM Art Lens (Canon EF Mount)
The Sigma 18-35mm f/1.8 DC HSM Art is a groundbreaking, wide-to-normal zoom lens engineered exclusively for APS-C format Canon EF-mount cameras. Delivering a practical 28.8-56mm full-frame equivalent focal range, this lens represents a historic milestone in optical engineering as the world’s first zoom to offer a constant f/1.8 maximum aperture. As a flagship entry in Sigma’s esteemed Global Vision Art series, it is meticulously designed to deliver elite prime-lens resolution and image quality across its entire focal range. It serves as an indispensable tool for filmmakers, landscape photographers, street documentarians, and low-light event shooters.
World-First Constant f/1.8 Aperture & Elite Art Optics
Constant f/1.8 Maximum Aperture: The exceptionally bright f/1.4-class light gathering power remains fixed across the entire zoom range. This allows you to maintain consistent exposure settings as you reframe your shot, excels in near-dark environments, and grants razor-thin control over shallow depth of field.
Five Special Low Dispersion (SLD) Elements: The internal optical layout incorporates five SLD glass elements to aggressively neutralize chromatic aberrations and color fringing, ensuring striking edge-to-edge clarity and strict color fidelity.
Four Aspherical Glass Elements: Designed with four high-precision aspherical lenses to systematically eliminate geometric distortions, astigmatism, and spherical aberrations for uniform sharpness and accurate rendering wide open.
Super Multi-Layer Coating: Optical elements feature a multi-layered anti-reflective coating to suppress internal ghosting and lens flare, maintaining deep contrast-rich imagery and color neutrality when shooting into harsh backlighting.
9-Blade Rounded Diaphragm: Outfitted with a rounded nine-blade aperture system to yield smooth, circular out-of-focus highlights and a creamy, natural background blur (bokeh).
High-Speed Hyper Sonic AF & Premium Build
Hyper Sonic AF Motor (HSM): Driven by an advanced coreless Hyper Sonic Motor paired with an optimized AF algorithm to deliver lightning-fast, precise, and near-silent autofocus tracking that seamlessly accommodates quiet video acquisition.
Internal Focusing & Full-Time MF: The internal focusing architecture prevents the lens barrel from expanding during operation, while the HSM drive supports full-time manual focus overrides simply by rotating the focus ring at any time.
Thermally Stable Composite (TSC) Chassis: The lens body is constructed using specialized Thermally Stable Composite material, which shares thermal expansion characteristics similar to aluminum. This ensures strict mechanical precision and structural integrity across wide temperature variations.
Rigid Brass Bayonet Mount: Built with a solid, treated brass bayonet mount to guarantee long-term alignment accuracy, mounting rigidity, and robust field durability.
USB Dock Compatibility: Natively compatible with the optional Sigma USB Dock, allowing users to connect the lens to a computer to fine-tune focus calibration values and update firmware over time.
Included Accessories
Dedicated Lens Hood Included: Ships complete with its original matching plastic lens hood, engineered to block stray, off-axis light from causing internal flare while providing robust physical impact shielding to the front element.
Front & Rear Caps Included: Outfitted with front and rear lens caps to securely safeguard both ends of the optical system during storage or travel.
Technical Specifications
Focal Length Range: 18-35mm (28.8-56mm Full-Frame Equivalent)
Aperture Range: f/1.8 to f/16
Lens Mount Type: Canon EF (APS-C Format Only)
Filter Thread Diameter: 72mm
Minimum Focus Distance: 11″ (28 cm)
Weight: Approx. 28.6 oz (810 grams)

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