Sigma Aizu Prime 25mm T1.3 LF Cinema Lens

Sigma Aizu Prime 25mm T1.3 LF Cinema Lens – Large-Format T1.3 Optics for Precision, Low-Light Control, and Cinematic Depth

The kind of lens that instantly elevates every frame, the Sigma Aizu Prime 25mm T1.3 LF Cinema Lens is engineered for filmmakers who refuse to compromise—those who want breathtaking clarity, organic softness, and powerful visual character all in one precision-built cinema tool. Designed specifically for large-format cinematography, this 25mm prime delivers an ultra-bright T1.3 aperture, giving you extraordinary low-light flexibility and a luxuriously shallow depth of field that transforms simple shots into immersive, cinematic moments. Unlike ordinary wide-angle lenses, this optic balances bold perspective with a refined optical signature, producing images that feel natural, emotional, and unmistakably high-end. If you’re looking to buy a lens that pushes your production value into premium territory, this is the one that makes every frame feel intentional and artfully crafted.

Built from the ground up exclusively for cinema—not adapted from stills glass—the Aizu Prime 25mm T1.3 LF features a 46.3mm image circle that fully covers Full Frame, Super 35, VistaVision, and ARRI LF Open Gate formats, ensuring professional-level flexibility across modern digital cinema cameras. Its meticulously tuned optical formula delivers exceptional sharpness without clinical harshness, maintaining a cinematic texture that preserves skin tones, roll-off, and highlights with an organic softness directors and DPs demand. With a minimum focus distance of just 0.31m, it turns close-up wide-angle shots into dynamic storytelling tools—perfect for emotional tension, environmental portraits, and stylized commercial work. The lens’s 13-blade iris creates beautifully rounded bokeh, while advanced distortion control and minimized focus breathing keep your shots clean, stable, and consistent under demanding production conditions.

Engineered with professional workflows in mind, this lens features 0.8 MOD cine gears, a 270° focus rotation, and a robust all-metal housing crafted from premium anodized aluminum for long-term durability. Its standardized 95mm front diameter and near-uniform size across the entire Sigma Aizu Prime line make it ideal for fast, efficient lens swaps on gimbals, Steadicams, handheld rigs, or remote focus systems—reducing downtime and maximizing on-set productivity. Whether you choose PL or Sony E mount, the lens delivers advanced metadata support, including Cooke /i, ZEISS eXtended Data, or Sony E protocol depending on mount, ensuring seamless integration with modern VFX and post-production pipelines. At approximately 1.7 kg, it achieves a rare balance of portability and professional solidity, offering the confidence of a premium cinema build without bulky lens heft.

Every detail—from its luminous engraved markings to its included SF-61 support foot, LCC-95 II front cap, and LCR III rear cap—reinforces Sigma’s commitment to delivering tools that work as beautifully in practice as they do on paper. What sets this lens apart is its ability to deliver a consistent, matched look across the entire Aizu Prime family, empowering cinematographers to produce cohesive visual storytelling from wide establishing shots through intimate close-ups. If you’re ready to buy a lens that enhances your production quality, accelerates your workflow, and adds unmistakable cinematic character to every project—from narrative films and commercials to high-end corporate and branded content—this 25mm T1.3 LF stands out as a must-own investment for serious creatives.

Buy the Sigma Aizu Prime 25mm T1.3 LF Cinema Lens today and take immediate control of your visual storytelling with uncompromising cinematic performance.

Product Benefits:

• Delivers cinematic depth and emotion with an ultra-bright T1.3 aperture that transforms ordinary scenes into powerful storytelling moments.
• Provides total confidence in low light, ensuring your visuals stay clean, expressive, and production-ready in any environment.
• Creates natural, organic skin tones and visually rich textures that elevate the emotional impact of every frame.
• Offers a large-format 46.3mm image circle, giving you the freedom to shoot on today’s most advanced cinema cameras without limitations.
• Minimizes focus breathing and distortion, helping you maintain smooth, uninterrupted focus pulls that keep viewers fully immersed.
• Short 0.31m minimum focus distance lets you capture intimate, tension-filled close-ups that intensify on-screen storytelling.
• Provides matched color and rendering across the entire Aizu Prime lineup for seamless intercutting and consistent emotional tone.
• Built with robust cine mechanics, offering precision control that empowers focus pullers and operators to perform flawlessly under pressure.
• Lightweight for its class, enabling longer handheld or gimbal shots without fatigue—perfect for run-and-gun or narrative work.
• Features metadata communication for efficient post-production workflows, reducing stress and saving valuable time on set.

Features:

Ultra-Bright T1.3 Aperture for Maximum Cinematic Impact

The Sigma Aizu Prime 25mm T1.3 LF stands out with its exceptionally fast T1.3 aperture, enabling filmmakers to capture scenes with dramatic shallow depth of field and expressive isolation even on a wide focal length. This speed provides unmatched creative versatility—allowing you to shoot in low-light environments without sacrificing clarity or dynamic range. Whether you’re crafting emotional close-ups or atmospheric wide shots, the T1.3 aperture ensures your visuals maintain the cinematic richness and character today’s audiences expect.

Large-Format 46.3mm Image Circle for Professional Camera Compatibility

Designed specifically for modern cinema workflows, the lens features a 46.3mm image circle, fully supporting Full Frame, Super 35, ARRI LF Open Gate, and VistaVision sensors. This broad compatibility empowers filmmakers to use the lens across multiple camera platforms without vignetting or quality loss. For productions relying on large-format sensors to maximize detail and depth, this lens delivers full coverage and exceptional optical performance, making it a future-proof investment.

Optical Design Engineered Exclusively for Cinema

Unlike rehoused stills lenses, the Aizu Prime is built from the ground up for cinematic performance. Its optical formula balances high resolution with natural softness, eliminating the overly clinical look common in many modern lenses. This produces a refined, filmic character with smooth highlight roll-off, accurate color, and controlled contrast—ideal for narrative, commercial, and high-end branded content. Every frame benefits from a rendering style that feels both modern and emotionally grounded.

Minimized Focus Breathing for Superior Visual Consistency

Sigma’s engineering ensures that this lens exhibits extremely low focus breathing, keeping the field of view stable during focus transitions. This is a critical advantage for dramatic pulls, rack focusing, or movements that rely on maintaining spatial integrity. Low breathing enhances viewer immersion, ensuring the audience stays connected to the story without distraction, and giving cinematographers true professional consistency across shots.

Close-Focus Capability for Dynamic Wide-Angle Storytelling

With a minimum focus distance of 0.31m, the 25mm T1.3 LF enables striking close-up compositions that amplify tension and emotional intensity. This capability makes it perfect for capturing subjects in tight spaces, emphasizing facial expressions, or creating a sense of visual urgency. When paired with its fast aperture and wide perspective, close focusing becomes a storytelling tool that enhances drama and engagement.

13-Blade Iris for Smooth, Velvety Bokeh

The precision-engineered 13-blade aperture creates beautifully rounded bokeh, ensuring out-of-focus elements appear smooth and visually appealing. This contributes significantly to scene atmosphere, especially in low-light or portrait-like compositions. Whether you are creating dreamy backgrounds or shaping light sources into cinematic orbs, the iris design enhances every frame with controlled elegance.

Robust All-Metal Housing Built for Demanding Productions

The Aizu Prime features a fully metal, anodized aluminum construction designed to withstand the stress of professional filmmaking environments. Its reinforced chassis, stable mechanics, and resistance to temperature shifts make it dependable on set. The build quality ensures long-term durability, while maintaining the tactile precision camera operators and focus pullers require for repeatable, high-stakes shots.

Standardized 95mm Front Diameter for Fast On-Set Workflow

Every lens in the Aizu Prime line, including the 25mm, shares a 95mm front outer diameter, streamlining matte box compatibility and accessory changes. This standardization saves valuable time during production by allowing crews to swap lenses quickly without adjusting clamp-on systems or reconfiguring rigs. When efficiency matters—on commercials, run-and-gun shoots, or multi-scene setups—this consistency becomes a measurable advantage.

270° Focus Rotation for Highly Accurate Focus Pulls

The extended 270° focus throw provides precise manual control, making fine adjustments smooth and repeatable. This wider rotation arc gives focus pullers more room to work with, especially during complicated movements or shallow-depth shots at T1.3. The mechanical precision dramatically enhances operational confidence, ensuring professional results even under challenging conditions.

Advanced Metadata Support for Seamless Post-Production Integration

The lens supports both Cooke /i and ZEISS eXtended Data on PL versions, as well as Sony E protocol on E-mount versions. This metadata capability enhances VFX workflows, color consistency, and post-production accuracy by feeding critical lens information directly into compatible camera systems. Productions that rely on CGI, virtual production, or data-driven color pipelines benefit significantly from this sophisticated level of integration.

Unified Size and Weight Across the Aizu Prime Line

Maintaining an approximately 1.6–1.7 kg weight and similar housing dimensions across all focal lengths, the Aizu Prime series ensures reliable interchangeability. This consistency minimizes the need for rebalancing on gimbals, Steadicams, or shoulder rigs when changing lenses. Crews save time, operators maintain momentum, and productions avoid unnecessary delays—an invaluable advantage when shooting on tight schedules.

Luminescent Engraved Markings for Low-Light Usability

The precision-engraved markings use luminescent paint, enhancing visibility during nighttime shoots or dimly lit sets. This allows operators and assistants to adjust focus and iris settings quickly without relying solely on external lighting tools. In fast-paced environments where every second matters, this feature enhances efficiency and accuracy.

• Ideal for feature films and high-end narratives requiring cinematic depth, wide perspectives, and expressive low-light performance.
• Perfect for commercial shoots where controlled distortion, sharp detail, and organic rendering enhance product, lifestyle, or brand storytelling.
• Excellent for music videos that rely on dramatic lighting, shallow depth of field, and stylized wide-angle compositions.
• Suited for documentaries needing a versatile wide lens capable of close-focus shots, natural rendering, and fast T1.3 capture in unpredictable lighting.
• Strong choice for corporate and branded content offering premium image quality and professional metadata support for streamlined post-production.
• Great for gimbal and Steadicam work thanks to its consistent size and weight across the Aizu Prime lineup and stabilized field of view.
• Highly effective for handheld cinematography allowing emotionally immersive wide shots with rich character and minimal optical distraction.
• Valuable for virtual production and VFX-heavy projects with reliable Cooke /i or ZEISS XD metadata for precise camera and lens data capture.
• Ideal for interviews and talking-head setups where the 25mm focal length provides natural context while maintaining subject isolation at T1.3.
• Useful for architectural and environmental shots providing wide coverage with controlled distortion and cinematic tonal response.
• Excellent for run-and-gun filmmaking offering fast adaptation to changing lighting conditions and close-focus storytelling opportunities.
• A dependable option for indie productions seeking premium image quality and large-format coverage without the extreme cost of high-end cinema glass.

Pros

• Ultra-bright T1.3 aperture delivers exceptional low-light performance and cinematic depth.
• Large-format 46.3mm image circle provides wide compatibility with professional cinema cameras.
• Natural, organic image rendering with balanced sharpness ideal for narrative and commercial use.
• Minimal focus breathing ensures stable, professional-quality focus transitions.
• Close-focus capability enables dramatic wide-angle storytelling and expressive compositions.
• Standardized 95mm front diameter simplifies matte box and rigging workflows.
• 270° focus rotation allows precise, repeatable focus pulls.
• Robust all-metal construction ensures long-term durability.
• Advanced metadata support (Cooke /i, ZEISS XD, Sony E protocol) enhances post-production efficiency.
• Consistent size and weight across the Aizu Prime lineup reduces rebalancing on gimbals and rigs.

Cons

• No front filter thread requiring matte box use for filtration.
• Heavier than typical stills lenses which may challenge lightweight setups.
• Premium cine build and features place it at a higher price point than hybrid or budget lenses.
• Metadata features depend on mount type and camera compatibility.
• Extremely shallow depth of field at T1.3 requires skilled focus pulling.

• Focal Length: 25mm
• Maximum Aperture: T1.3
• Minimum Aperture: T22
• Image Circle: 46.3mm (Large Format / Full Frame / VistaVision / ARRI LF Open Gate)
• Lens Format Coverage: Full Frame, Super 35, Large Format
• Diaphragm Blades: 13-blade iris
• Angle of View (LF Open Gate): 72.6°
• Angle of View (Full Frame 36×24): 71.5°
• Angle of View (Super 35): 52.9°
• Minimum Focus Distance: 0.31m / 12.2" (alternative spec: 0.33m)
• Magnification Ratio: 1:6.5 (alternative spec: 1:6.9)
• Focus Rotation: 270°
• Iris Rotation: 70°
• Focus Gear: 0.8 MOD cine gear
• Iris Gear: 0.8 MOD cine gear
• Front Diameter: 95mm
• Maximum Housing Diameter: 104mm
• Filter Thread: None
• Lens Mount Options: PL Mount, Sony E-Mount
• Metadata Support (PL): Cooke /i Technology, ZEISS eXtended Data via /i-compatible PL mount or 4-pin LEMO
• Metadata Support (Sony E): Sony E-Mount Communication Protocol
• Construction: Anodized aluminum housing
• Weight (PL): Approx. 1.6–1.7 kg / 3.6 lb
• Weight (Sony E): Approx. 1.7 kg / 3.7–3.8 lb
• Length (PL): 125mm
• Length (Sony E): 159mm
• Included Accessories: LCC-95 II Front Lens Cap (95mm), LCR III Rear Cap (PL or E-Mount), SF-61 Lens Support Foot
• Support Foot Threads: 1/4"-20 and 3/8"-16
• Scale Options: Imperial (feet) or Metric (meters)
• Markings: Engraved, luminescent paint for low-light visibility
• Part Numbers (PL Feet/Metric): UPC/EAN 00-85126-94250-2 / 00-85126-94251-9
• Part Numbers (Sony E Feet/Metric): UPC/EAN 00-85126-94252-6 / 00-85126-94253-3
• Package Weight: Approx. 4.7 lb
• Box Dimensions: ~11.6 × 7.3 × 6.9"

• LCC-95 II Front Lens Cap (95mm)
• LCR III Rear Lens Cap (PL or Sony E Mount)
• SF-61 Lens Support Foot

Is the Sigma Aizu Prime 25mm T1.3 LF suitable for large-format cameras?

Yes. The lens features a 46.3mm image circle, allowing it to fully cover Full Frame, Super 35, VistaVision, and ARRI LF Open Gate sensors. This makes it ideal for modern cinema cameras that rely on large-format imaging.

What makes the T1.3 aperture beneficial for filmmaking?

The ultra-bright T1.3 aperture provides exceptional low-light performance and enables a shallow depth of field, giving filmmakers greater control over mood, focus isolation, and overall cinematic expression.

Does the lens minimize focus breathing?

Yes. The optical design is engineered specifically for cinema use and significantly reduces focus breathing, ensuring stable framing during focus pulls and maintaining viewer immersion.

Is the lens designed for professional on-set workflows?

Absolutely. With 0.8 MOD cine gears, 270° focus rotation, a 95mm front diameter, and a durable all-metal housing, the lens supports demanding professional environments and rapid lens changes.

Does the Sigma Aizu Prime 25mm support metadata communication?

Yes. The PL version supports Cooke /i and ZEISS eXtended Data through native mount communication or a 4-pin LEMO port. The Sony E-mount version uses Sony’s E-mount protocol for lens metadata recording.

Is this lens good for gimbal or Steadicam setups?

Yes. Its relatively compact size, balanced weight, and consistency with other lenses in the Aizu Prime lineup make it ideal for stabilized setups with minimal rebalancing required between lens swaps.

What kind of look does this lens produce?

The Aizu Prime 25mm delivers a cinematic blend of modern sharpness and organic softness, producing natural skin tones, smooth bokeh, and elegant highlight roll-off—ideal for narrative and commercial filmmaking.

Does the lens offer close-focus capability?

Yes. With a minimum focus distance of 0.31m, it allows dynamic close-up compositions, making it excellent for expressive storytelling and dramatic visual tension.

What accessories are included with the lens?

The lens comes with an LCC-95 II front cap, LCR III rear cap (PL or E), and an SF-61 support foot with 1/4"-20 and 3/8"-16 mounting threads to assist with rigging stability.

Is the lens durable enough for professional production environments?

Yes. It features a robust anodized aluminum housing designed for long-term use, high mechanical precision, and stability in challenging shooting conditions.