The Sigma 18-35mm f/1.8 DC HSM Art for Canon EF is an exceptional achievement in zoom lens design. Part of Sigma’s celebrated Art series, it was built specifically for Canon EF cameras with APS-C sensors. Its standout and genuinely unique feature is a constant f/1.8 maximum aperture across the entire zoom range, giving outstanding low-light performance and cinematic depth-of-field control from 18mm through 35mm.
The lens uses an advanced optical design with five Special Low Dispersion (SLD) elements and four aspherical elements, together with Sigma’s Super Multi-Layer Coating, for extremely sharp, high-contrast images with chromatic aberration, geometric distortion and flare kept to a minimum. With fast, quiet Hyper Sonic Motor autofocus and a durable Thermally Stable Composite body with a brass mount, the Sigma 18-35mm Art is an ideal creative tool for photographers and filmmakers who refuse to compromise on quality.
Key Features
- An unmatched constant f/1.8 aperture: Maintains an f/1.8 maximum aperture across the full 18mm to 35mm zoom range, allowing superior low-light shooting and beautiful background separation at every focal length.
- Art series optics with exceptional sharpness: Five SLD elements reduce chromatic aberration and colour fringing, while four aspherical elements eliminate geometric and spherical distortion for outstanding clarity across the frame.
- Excellent contrast and colour accuracy: Super Multi-Layer Coating reduces flare and ghosting, ensuring high-contrast, colour-neutral images even when shooting towards bright light sources.
- Fast, quiet HSM autofocus: The Hyper Sonic Motor with internal focusing delivers fast, quiet and accurate autofocus, with manual focus override available at any time simply by turning the focus ring.
- Soft cinematic bokeh: The nine-blade rounded diaphragm produces soft, attractive out-of-focus blur, ideal for portraiture, documentary work and video.
- Durable, high-precision build: A Thermally Stable Composite (TSC) body and brass mount ensure precise fit, rigidity and reliable performance across a range of temperatures, with optional Sigma USB Dock compatibility for firmware updates and fine calibration.
Specifications
| Mount | Canon EF |
|---|---|
| Format Compatibility | APS-C (DC) |
| Focal Length | 18-35mm (28.8-56mm equivalent on APS-C) |
| Maximum Aperture | f/1.8 constant |
| Minimum Aperture | f/16 |
| Optical Elements | 5 SLD elements, 4 aspherical elements |
| Diaphragm Blades | 9 rounded blades |
| Autofocus System | Hyper Sonic Motor (HSM) with internal focusing |
| Lens Series | Sigma Art (Global Vision) |
| Coating | Super Multi-Layer Coating |
Frequently Asked Questions
Is the Sigma 18-35mm f/1.8 Art compatible with Canon EF full-frame cameras?
No. This lens is designed specifically for Canon EF cameras with APS-C sensors (designated DC). On an APS-C camera it provides a 28.8-56mm equivalent range. While it can physically be mounted on a Canon EF full-frame camera, it is not designed or optimised to cover the full-frame image circle.
Does the f/1.8 aperture stay constant across the whole zoom range?
Yes. Unlike most zoom lenses, whose maximum aperture changes as you zoom, the Sigma 18-35mm f/1.8 Art maintains a constant f/1.8 maximum aperture at every focal length from 18mm to 35mm, giving consistent exposure and full depth-of-field control while zooming.
Can I use manual focus while autofocus is active on this lens?
Yes. Thanks to the Hyper Sonic Motor (HSM) autofocus system, this lens supports manual focus override at any time. You can turn the focus ring to fine-tune focus without switching out of autofocus mode, which is ideal for precise creative focusing in both photography and video.
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