Sigma Aizu Prime 125mm T1.3 - Lens review and specs

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PL Mount Sony E Cinema full-frame 2026

Useful links

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125mm

Focal length

f/1.3

Max aperture

2300 g

Weight

14mm35mm85mm200mm600mm

▲ 125mm

Max aperture

f/1.4

f/1.3

f/2

Constant Aperture

Zoom Ratio: 1x

Aperturef/1.3

f/1.3f/22

Near focus21' 10"

Far focus22' 7"

Total DOF9"

Hyperfocal1367' 6"

Subject distance22' 3"

Focal length125 mm

Aperturef/1.3

SensorFull Frame

Illustrative scene preview based on this lens's focal length, aperture, and sensor coverage.

This preview uses 125mm, f/1.3, and Full Frame. Subject distance is estimated to keep lens previews comparable.

Min aperture: f/22
Diaphragm blades: 13

Optics

Special elements: High-performance cine optical elements
Coatings: Multi-layer cinema coating

Focusing

Minimum focus: 1.25 m

Physical

Weight: 2300 g
Dimensions: ⌀95mm × 172mm
Color: Black

Handling & Controls

Distance Scale: Yes

Recommended Use

Ideal for: Portraits, Weddings

Release year: 2026
Announced: Sep 9, 2026
Approx price: $9799 USD

The best

Ultrafast T1.3 large-format telephoto cinema prime engineered for cinematic close-ups and narrative storytelling.

Also

Generous φ46.3mm image circle covering Full Frame and ALEXA LF with Cooke /i and ZEISS eXtended Data support.

Summary

The Sigma Aizu Prime 125mm T1.3 is a high-end large-format telephoto cinema prime lens engineered for top-tier feature films, premium episodic television, and demanding commercial productions. Crafted by Sigma at its historic manufacturing plant in Aizu, Japan, this 125mm prime brings together an ultrafast constant T1.3 aperture and an expansive φ46.3mm image circle, guaranteeing full coverage across Full Frame, VistaVision, and ARRI ALEXA LF Open Gate camera sensors without shading or vignetting.

Tailored specifically for cinematic storytelling, the optical formula masterfully balances high-resolution clarity with a warm, natural rendering that renders skin tones with pleasing softness and organic depth. Its 13-blade rounded aperture creates dreamy, spherical bokeh highlights and smooth focus fall-off, allowing directors and cinematographers to isolate subjects with striking visual depth. Internal optical stabilization of the frame minimizes focus breathing to virtually undetectable levels across the entire focus distance range.

Engineered to withstand harsh production environments, the robust weather-sealed metal chassis features a standardized 95mm front diameter, unified 0.8 MOD gear rings, and a wide 270-degree focus rotation for exceptionally precise manual focus pulls. In its ARRI PL mount configuration, it natively supports Cooke /i Technology and ZEISS eXtended Data communication protocols, feeding critical optical and distortion metadata directly into modern visual effects (VFX) and virtual production workflows.

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Where to buy

Amazon USAView offers B&H PhotoView product

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Pros & Cons

Pros

Consistent ultrafast T1.3 maximum aperture across large-format sensor coverage
Generous φ46.3mm image circle covering Full Frame, VistaVision, and ALEXA LF
Creamy, circular bokeh and flattering subject separation with 13-blade iris
High-precision 270-degree focus throw with standardized 0.8 MOD gearing
Advanced real-time metadata workflows via Cooke /i Technology and ZEISS eXtended Data