Sigma is making waves again in the camera world with the launch of the new Sigma 17-40mm F1.8 DC | Art lens. This isn’t just another lens; it’s the first Art series zoom lens designed specifically for APS-C mirrorless cameras, picking up where its legendary DSLR predecessor (the 18-35mm F1.8) left off but now built for the modern era of lighter, more compact mirrorless systems.
Contents
The big news here is bringing that sought-after F1.8 constant aperture to a zoom range (17-40mm, which acts like a versatile 25.5-60mm on a full-frame camera) in a package optimized for mirrorless bodies. This lens promises sharp image quality, excellent low-light performance, beautiful background blur (bokeh), and features tailored for both photography and video creators, all while being significantly lighter than previous F1.8 zooms.
What Makes This Lens Stand Out?
Sigma’s Art line is known for pushing boundaries, and the 17-40mm F1.8 DC doesn’t disappoint. It takes the concept of a fast, pro-level zoom and reimagines it for the popular APS-C mirrorless market, covering mounts like Sony E, L-Mount, Fujifilm X, and Canon RF.
The Brilliance of F1.8
The headline feature is undoubtedly the constant F1.8 aperture available throughout the zoom range. What does this mean for you?
- Low Light Performance: F1.8 lets in a lot of light, making this lens ideal for shooting indoors, at night, or in any dim environment without needing super high ISO settings that can add grain to your photos.
- Beautiful Background Blur: A wide aperture like F1.8 creates a shallow depth of field, allowing you to beautifully blur the background behind your subject. This is perfect for portraits, product shots, or isolating your subject from distractions. It gives that professional, dreamy look many photographers and videographers crave.
Instead of needing multiple prime lenses with wide apertures, you get the flexibility of a zoom while retaining the brightness typically only found in fixed-focal-length lenses.
Sigma 17-40mm F1.8 DC Art lens shown mounted on a mirrorless camera body
Built for Modern Mirrorless
Unlike its DSLR ancestor, this lens is built from the ground up for mirrorless systems. This means it’s designed to work seamlessly with the electronic focus and features of modern cameras. It’s compatible with many popular APS-C cameras, opening up that F1.8 world to a wide range of users.
Versatility for Any Creator
Whether you’re primarily a photographer, a videographer, or a hybrid shooter, the 17-40mm F1.8 offers features that make it a versatile tool.
Zoom Range for Everyday Use
The 17-40mm focal range on an APS-C sensor gives you an effective field of view similar to about 25.5-60mm on a full-frame camera. This covers a very useful range:
- Wide-Angle (17mm): Great for landscapes, cityscapes, interior shots, and getting a lot into the frame.
- Standard/Slight Telephoto (40mm): Ideal for portraits, street photography, and isolating subjects.
It’s a fantastic range for travel, events, and everyday shooting where you might encounter different scenarios.
Designed with Video in Mind
Sigma has packed in features crucial for video production:
- Inner Zoom: The physical size of the lens doesn’t change when you zoom. This is huge for stability, especially when using gimbals, and helps keep the lens balanced.
- High-Speed, Silent Autofocus: The HLA (High-response Linear Actuator) motor provides fast and very quiet focusing, which is essential for recording video without annoying motor noise.
- Minimal Focus Breathing: Focus breathing is when the angle of view slightly changes as you shift focus. This lens is designed to minimize this effect, leading to smoother, more natural-looking focus pulls in your videos.
It even includes features like an aperture ring (with click/de-click options for smooth video aperture changes) and customizable AFL buttons on supported cameras.
Lighter, More Practical Design
Sigma has managed to pack all this performance into a more manageable size. The 17-40mm F1.8 DC weighs in at just 535g (about 1.2 lbs). This is significantly lighter than the older DSLR version and makes a real difference when you’re carrying your gear all day or hand-holding your camera.
Plus, it’s built tough with a dust- and splash-resistant structure and a water- and oil-repellent coating on the front element. This means you can use it confidently in less-than-ideal weather conditions.
Front view of the Sigma 17-40mm F1.8 DC Art lens showing the filter thread
Price and Availability
The Sigma 17-40mm F1.8 DC | Art lens will be available starting mid-July 2025 for Sony E, L-Mount, and Fujifilm X Mount cameras. The Canon RF Mount version will follow in August 2025.
It will retail for $919 USD. Considering the unique F1.8 constant aperture, the versatile zoom range, and the build quality tailored for both photos and video, this price point offers excellent value for APS-C mirrorless users looking for a high-performance standard zoom.
This new lens fills an important gap in the APS-C mirrorless market, offering a compelling combination of speed, versatility, and quality that was previously harder to find.
