Sigma 50mm f/1.2 DG DN A (Art) Full-Frame Autofocus Lens for Sony E-Mount, Black {72}

Sigma's lightest f/1.2 50mm prime, built for Sony E.

At 745g, this is the lightest f/1.2 50mm lens in its class, a meaningful number when you're shooting all day. The dual HLA (High-response Linear Actuator) motors drive autofocus that's both quiet and fast, with internal focusing keeping the barrel length fixed during operation. That same motor system is what allows Sigma to keep the diameter at 81mm and length at 109mm, compact figures for a lens with this aperture. The 72mm filter thread is a practical bonus for portrait and cinema shooters who already own variable NDs or polarizers in that size.

The 13 rounded diaphragm blades produce out-of-focus rendering that stays smooth across the aperture range, not just wide open. Four aspheric elements in the 17-element, 12-group formula control the kind of aberrations that f/1.2 glass typically struggles with at close range. Minimum focus distance sits at 0.40m for a maximum magnification of 0.16x, close enough for environmental portraiture and lifestyle product work. Physical buttons on the barrel and a true aperture ring give you direct control without menu diving, a feature that matters in video workflows where smooth, clickless aperture transitions are standard practice. At f/1.2, this lens gives Sony E-mount shooters a genuine low-light option without reaching for a camera body upgrade.

Who It's For

Wedding photographers working reception rooms with difficult mixed lighting will get usable exposures at f/1.2 that f/1.8 glass simply cannot match. Portrait shooters who want shallow depth of field without the rendering harshness that often comes with fast primes will benefit from the 13-blade aperture and four aspheric elements working together. Video cinematographers using Sony mirrorless bodies will appreciate the quiet dual HLA autofocus and the physical aperture ring for manual exposure pulls. Street and documentary photographers who need a fast 50mm they can carry for extended periods will find the 745g weight a real advantage over heavier f/1.2 alternatives.

Key Features

• 50mm fixed focal length with f/1.2 maximum aperture
• Dual HLA motors enable quiet, high-speed autofocus with internal focusing
• 745g weight, the lightest f/1.2 50mm in class
• 81mm diameter, 109mm length for compact handling
• 17-element, 12-group optical design with 4 aspheric elements
• 13 rounded diaphragm blades for smooth bokeh rendering
• 0.40m minimum focus distance, 0.16x magnification
• Physical aperture ring and function buttons for direct control

FAQ

How does this 50mm f/1.2 compare weight-wise to other f/1.2 50mm lenses?

At 745g, it's the lightest f/1.2 50mm in its class. The dual HLA motor system and internal focusing design keep the barrel compact without sacrificing optical performance.

What's the minimum focus distance, and is this lens usable for close work?

0.40m with 0.16x magnification. That's close enough for environmental portraiture and lifestyle product shots, though not a true macro lens.

Does the aperture ring have click stops?

Yes, the aperture ring clicks at each stop. There are also physical function buttons on the barrel for direct control in video work where you might need clickless transitions.

How fast is the autofocus, and will it be quiet during video recording?

The dual HLA motors deliver both speed and quiet operation. Internal focusing means the barrel doesn't extend, keeping focus breathing minimal for video.

What filter size does this lens use?

72mm filter thread. A practical match if you already own variable NDs or polarizers in that size for portrait or cinema work.

How does the bokeh rendering perform across the aperture range?

The 13 rounded diaphragm blades produce smooth out-of-focus rendering whether you're at f/1.2 or stopped down. Four aspheric elements control aberrations that typically plague ultra-wide apertures at close focus distances.

Is there optical stabilization built in?

No. This is a fixed 50mm prime without stabilization, designed as a bright manual-focus or autofocus option for low-light situations where you'd otherwise upgrade your camera body.