Sigma 18-35mm f/1.8 DC HSM A (Art) AF Lens for Nikon APS-C DSLR {72}

The only zoom lens that holds f/1.8 across its entire range.

The Sigma 18-35mm f/1.8 DC HSM Art broke real ground when it arrived: no other wide-to-standard zoom had ever sustained a constant f/1.8 aperture from 18mm through 35mm. On an APS-C sensor, that translates to a 27-52.5mm equivalent range, putting a fast 28mm wide, a fast 35mm standard, and everything between into a single lens. That's the kind of flexibility that would otherwise require two or three fast primes in your bag.

The optical formula runs 17 elements across 12 groups, with SLD glass and wide glass molded aspherical elements working together to keep aberrations, color fringing, and distortion in check across that bright aperture. Super Multi-Layer Coating handles flare and ghosting, which matters when you're shooting f/1.8 toward light sources. Minimum focusing distance comes in at 28cm, giving you genuine close-up capability at the wide end. The 72mm filter thread is a standard size, and the HSM autofocus motor is fast and quiet enough for candid and video work alike.

At f/1.8 throughout the zoom range, this lens earns its weight, 28.6 oz is not light, but it's one body plus one lens doing the work of a kit that would outweigh it twice over.

Who It's For

Event and wedding photographers working mixed or low-light venues get f/1.8 available at any focal length without swapping glass mid-reception. Documentary and street shooters on APS-C bodies benefit from the 27-52.5mm equivalent coverage, spanning environmental wide shots to tighter candid framing in a single pull of the zoom ring. Portrait photographers working at 35mm equivalent can pull shallow focus with the same aperture they'd expect from a dedicated portrait prime. Video shooters who need quiet HSM autofocus and internal zooming, so the front element doesn't rotate or extend, will find the handling practical for run-and-gun work.

Key Features

• Constant f/1.8 aperture from 18-35mm across full zoom range
• 27-52.5mm equivalent focal length on APS-C sensors
• HSM autofocus motor with internal focusing design
• 17 elements across 12 groups with SLD glass and aspherical elements
• Super Multi-Layer Coating suppresses flare, ghosting, and color fringing
• 28cm minimum focus distance for close-up capability
• 72mm filter thread
• Weighs 28.6 oz

FAQ

What's the actual equivalent focal length on a DX-format body?

27-52.5mm. That puts you at a fast 28mm wide angle on the short end and a fast 35mm standard on the long end, both useful focal lengths without needing a second lens.

Does f/1.8 hold across the entire zoom range?

Yes. That's the whole point of this lens. 18mm at f/1.8, 35mm at f/1.8, and everything between at f/1.8. No stopping down as you zoom.

How close can you focus?

28cm (11 inches) from the sensor plane. That's useful for filling a frame with something small at 18mm, though autofocus is internal so the front element doesn't extend.

What's the weight penalty for that constant f/1.8?

28.6 oz. That's heavier than a typical zoom, but lighter than carrying two or three fast primes that would otherwise do this job.

How does it handle backlit and high-contrast shooting?

Super Multi-Layer Coating controls flare and ghosting, which matters when you're shooting f/1.8 toward bright light sources. The SLD glass and aspherical elements also keep color fringing and distortion minimal across the range.

Is the autofocus suitable for video?

Yes. The HSM motor is fast and quiet. Internal focusing means the barrel doesn't shift focus breathing when you rack focus.

What size filters does this take?

72mm. That's a common standard, so you can share filters across other lenses.