Sigma 18-35mm f/1.8 DC HSM Art Lens for Canon EF

Sigma 18-35mm f/1.8 DC HSM Art Lens for Canon EF
Industry-Defining Constant f/1.8 Aperture Zoom for APS-C Creators
The Sigma 18-35mm f/1.8 DC HSM Art is a historic, award-winning optical masterpiece engineered natively for crop-sensor (APS-C) Canon EF-mount DSLR cameras. As a crown jewel of Sigma’s elite Global Vision Art series, this lens shattered industry conventions by becoming the world’s first zoom lens to offer a remarkably bright, constant f/1.8 maximum aperture across its entire focal range.

Delivering a highly versatile 28.8-56mm full-frame equivalent focal length, it spans effortlessly from wide-angle landscapes and interior architectures to a natural, normal standard perspective. Combining cinema-tier light transmission, uncompromising prime-level sharpness, and an advanced ultrasonic autofocus motor, this premium lens serves as the ultimate creative workhorse for low-light photographers, wedding documentarians, and independent filmmakers.

Included Production Accessories
Sigma Dedicated Petal-Type Lens Hood: Custom-shaped to block stray, off-axis ambient light from creeping into the glass elements, drastically reducing internal flare while protecting the front lens surface from accidental impacts.

Front Lens Cap

Rear Lens Cap

Groundbreaking Constant f/1.8 Speed & Art-Series Optics
World’s First Constant f/1.8 Zoom: Maintains an ultra-bright f/1.8 maximum aperture throughout the entire zoom range. This allows videographers and photographers to adjust focal lengths without losing light transmission, ensuring consistent low-light exposure tracking and deep depth-of-field control.

Prime-Quality Optical Resolution: Specially designed for artistic and high-resolution commercial applications, delivering blistering sharpness and edge-to-edge contrast that rivals individual premium prime lenses.

Five Special Low Dispersion (SLD) Elements: Heavily fortified with five specialized low-dispersion glass elements to systematically eliminate color fringing, chromatic aberrations, and spectral bleeding for superior color accuracy.

Four Aspherical Elements: Incorporates four advanced aspherical glass profiles to structurally stamp out geometric distortion and spherical aberrations, ensuring precise architectural lines and true-to-life subject rendering.

Super Multi-Layer Coating Architecture: Individual optical elements feature multi-layer anti-reflective coatings to suppress ghosting, surface reflections, and lens flare, maintaining rich contrast under direct backlighting.

Rounded Nine-Blade Diaphragm: Outfitted with an expansive 9-blade circular aperture array that yields an incredibly smooth, creamy, and artistic background blur (bokeh) for selective focus separation.

High-Speed Hyper Sonic Motor & Heavy-Duty Composites
Hyper Sonic Motor (HSM) & Internal Focus: Driven by an integrated ultrasonic motor paired with a fully internal focusing design. This configuration delivers lightning-fast, highly precise, and whisper-quiet autofocus capture, while keeping the physical length of the lens completely fixed during operation.

Full-Time Manual Focus Override: Supports seamless, full-time manual focus fine-tuning simply by turning the physical textured focus ring at any moment during active tracking, bypassing the need to toggle mechanical camera switches.

Thermally Stable Composite (TSC) Build: The main structural barrel is constructed from a premium Thermally Stable Composite (TSC) material. This compound shares a high elasticity profile with metal and exhibits minimal thermal expansion, ensuring tight internal optical alignments across extreme temperature fluctuations.

Rigid Brass Bayonet Mount: Features a high-precision, solid brass bayonet mount that reinforces structural rigidity and alignment accuracy each time it locks onto a Canon EF camera body.

Sigma USB Dock Configuration Compatibility: Natively compatible with the optional Sigma USB Dock (sold separately), enabling creators to connect the lens directly to a computer to fine-tune focus calibration maps, adjust custom parameters, and perform firmware updates.

Technical Specifications
Lens Classification Spec: High-Performance Wide-to-Standard Zoom (Sigma Art Series)

Focal Length Range: 18mm – 35mm (35mm Full-Frame Equivalent: 28.8-56mm)

Maximum Aperture Profile: f/1.8 (Constant throughout entire zoom range)

Minimum Operational Aperture: f/16

Lens Mount Type: Canon EF Mount (Optimized specifically for APS-C Crop-Sensor DSLRs)

Filter Thread Diameter Size: 72mm

Lens Optical Layout: 17 Elements configured in 12 Groups

Autofocus Motorization Engine: HSM (Hyper Sonic Motor technology with Internal Focus)

Minimum Focus Distance: 11.0 inches / 28 cm

Maximum Magnification Ratio: 0.23x (1:4.3 reproduction ratio)

Aperture Blade Count: 9-Blade Diaphragm (Rounded Layout)

Chassis Shell Composition: Thermally Stable Composite (TSC) with Brass Bayonet

Dimensions (Diameter x Length): Approx. 3.07 x 4.76 inches / 78.0 x 121.0 mm

Weight: Approx. 28.6 oz / 810 grams (Robust, professional-grade zoom build)