Sigma AF 17-40MM F1.8 DC Art lens for Canon RF-S 

A Game-Changing Zoom for Creators Who Want It All

The Sigma 17-40mm F1.8 DC | Art is a next-generation standard zoom lens for APS-C mirrorless cameras, designed to deliver prime lens-level image quality with the versatility of a zoom. Building on the legendary Sigma 18-35mm F1.8, this lens offers a broader focal range, lighter build, and enhanced performance for both stills and video.

With a constant f/1.8 aperture across the zoom range, you’ll enjoy stunning bokeh, exceptional low-light capability, and beautifully sharp results in all conditions.

Key Features:

• Constant f/1.8 Aperture
  Enjoy bright, sharp images across the full 17–40mm range—perfect for indoor, night, and creative bokeh shots.

• Prime-Level Optical Performance
  Advanced optics with aspherical elements deliver high resolution and minimal distortion, even wide open.

• 17–40mm Zoom Range (25.5–60mm full-frame equivalent)
  Covers everything from wide landscapes to tight portraits—without changing lenses.

• Fast, Quiet Autofocus with HLA (High-response Linear Actuator)
  Smooth and accurate focusing for both photography and video, even with gimbals or handheld rigs.

• Designed for Video Too
  Inner zoom for better balance, minimal focus breathing for smooth focus pulls, and a declickable aperture ring for silent exposure adjustments.

• Built for the Real World
  Dust- and splash-resistant design with water- and oil-repellent front coating—ideal for outdoor shooting.

• Compact and Lightweight
  Over 30% lighter than the previous 18-35mm f/1.8 and uses a smaller 67mm filter thread for added portability.

• Two Customisable AFL Buttons
  Quick access to key functions in either landscape or portrait mode (functionality depends on camera body).

Perfect For:

• Everyday and travel photography

• Portraits, street, lifestyle, and events

• Vlogging and content creation

• Low-light and night scenes

• Run-and-gun video production

Tech Specs at a Glance:

• Mount: APS-C (Available for multiple mirrorless systems)

• Aperture Range: f/1.8 – f/16

• Filter Size: 67mm

• Weight: ~30% lighter than Sigma 18-35mm f/1.8

• Focus: Internal, HLA-driven autofocus

• Zoom Type: Internal (no barrel extension)

Why Buy the Sigma 17-40mm F1.8 DC | Art?

This lens pushes the limits of what a zoom can do—offering the speed, clarity, and feel of a prime, with the flexibility and portability of a high-performance zoom. Whether you shoot photos or videos, this lens will elevate your creativity while keeping your kit lightweight and versatile.