Sigma 24mm f/1.4 DG HSM A (Art) Lens for Nikon {77}

Sigma's 24mm f/1.4 Art: the wide-angle prime that redefined third-party optics.

The Art line optical design packs 15 elements across 11 groups, with FLD and SLD glass working together to suppress chromatic aberration at the edges of the 84.1-degree field. Aspherical elements positioned toward the rear of the design address sagittal coma flare and axial chromatic aberration, two problems that plague fast wide-angle lenses and show up most brutally in astrophotography. At f/1.4, the light-gathering capability is real and usable, not just a spec sheet number.

The HSM autofocus motor drives an internal focus mechanism, so the barrel length stays fixed and the front element doesn't rotate, useful when you're using a polarizer on the 77mm filter thread. Nine rounded aperture blades shape out-of-focus areas in a way that holds up even at mid-range distances, not just at portrait working distances. Full-time manual focus override means you can nudge focus after an AF acquisition without flipping any switches.

At 665 g and 90.2 mm long, this lens sits in a practical range for full-day carry. Nikon F shooters who have been working around the limitations of slower wide-angle zooms will find f/1.4 changes what's possible after dark and in low-lit interiors. This is a proven design with a decade of real-world results behind it.

Who It's For

Astrophotographers get the direct benefit of f/1.4 at 24mm: the wide field and light-gathering combination means shorter exposures for star trails and Milky Way work. Wedding photographers shooting tight reception venues use the 25 cm minimum focus distance and the f/1.4 aperture to work in available candlelight without flash. Landscape shooters on APS-C bodies get a 38mm equivalent with full-frame optical quality. Street and documentary photographers who want subject separation at wide angles will find the nine-blade bokeh holds up at close to mid-range distances.

Key Features

• f/1.4 maximum aperture for low-light and astrophotography work
• 15 elements in 11 groups with FLD and SLD glass for edge sharpness
• 84.1-degree field of view on full-frame bodies
• HSM ultrasonic autofocus with internal focus mechanism
• Nikon F mount, full-frame format
• 9 rounded aperture blades for smooth bokeh
• 77mm filter thread, non-rotating front element
• 665g body with 90.2mm length for portable carry

FAQ

How does the f/1.4 aperture perform in low light compared to a standard 24mm zoom?

At f/1.4, you're gathering roughly 4 times the light of an f/2.8 lens, which means usable handheld shutter speeds in interior venues and night scenes where zooms force you to ISO 3200+. The internal focus mechanism also speeds up acquisition in dim light.

Will this lens work with a polarizer?

Yes. The front element doesn't rotate during focus, so a polarizing filter stays locked in position. The 77mm thread accepts standard screw-mount filters without the rotation issues that plague many fast wide-angles.

What's the focus shift issue I've read about, and how much does it affect real shooting?

At f/1.4, spherical aberration causes the best focus point to shift when you stop down. In practice, focus at your shooting aperture rather than wide open if you're working beyond f/4, especially at the longer end of working distances. For astrophotography and fast handheld work, focus wide open and accept the tradeoff.

How sharp is this lens at f/1.4 across the frame?

Corner sharpness improves significantly from f/1.4 through f/5.6. Center sharpness at f/1.4 is solid, but peak performance arrives by f/4. The FLD and SLD glass suppresses edge chromatic aberration effectively, which keeps the periphery cleaner than most competing designs at this price.

Is autofocus fast enough for event work?

The HSM motor is quick and quiet. It's not as snappy as modern systems, but perfectly serviceable for weddings and indoor receptions where you're not tracking moving subjects. Full-time manual focus lets you nudge focus without switching modes.

At 665g, how does this feel mounted on a D750 or D850?

Balanced and portable. It's lighter than the Canon 24mm f/1.4L and won't dominate the front of your camera. Manageable for full-day carry on a neck strap or in a bag.

Does the 9-blade aperture produce pleasing bokeh?

Yes. The rounded blades shape out-of-focus areas smoothly even at mid-range distances. Bokeh balls hold their shape without the diaphragm edge artifacts that plague lenses with fewer blades.