Description
Sigma Aizu Prime 25mm T1.3 LF Cinema Lens: Exceptional Wide-Angle Performance for Full Frame Cinematography
The Sigma Aizu Prime 25mm T1.3 LF Cinema Lens stands as a testament to Sigma’s commitment to delivering uncompromising optical quality for high-end cinematic productions. Engineered for large-format (LF) or full-frame sensor cameras, this prime lens offers a wide, yet controlled, field of view with an exceptionally fast T1.3 aperture, making it an indispensable tool for capturing immersive environments, expansive scenes, and dynamic perspectives, even in challenging low-light conditions.
Masterful Optical Design for Unrivaled Image Quality:
Born from Sigma’s revered “Aizu” production facility, known for its precision engineering, this 25mm T1.3 prime lens delivers superb image quality across the entire full-frame sensor. It offers:
- Exceptional Sharpness: Razor-sharp detail from center to edge, even wide open at T1.3, ensuring high-resolution capture that can withstand critical scrutiny.
- Minimal Aberrations: Meticulously corrected for chromatic aberration, distortion, and vignetting, providing clean, pure images without unwanted optical artifacts.
- Consistent Color Science: Designed to match the color rendition of other Sigma Cine Prime lenses, ensuring seamless integration and a cohesive look across your entire lens set during production.
- Beautiful Bokeh: The very fast T1.3 aperture, combined with a large number of iris blades, produces incredibly smooth and artistic background blur, allowing subjects to beautifully separate from their surroundings.
Ultra-Fast T1.3 Aperture for Low Light and Creative Depth of Field:
The incredibly wide T1.3 maximum aperture is a standout feature, making this lens an ideal choice for shooting in dim environments where every photon counts. It allows for natural light capture without relying heavily on high ISO settings, preserving image purity. Furthermore, this fast aperture provides exceptional control over depth of field, enabling cinematographers to achieve extremely shallow focus, drawing the viewer’s eye precisely where intended.
Robust Cine-Ready Construction:
Every aspect of the Sigma Aizu Prime 25mm T1.3 LF is crafted for the rigorous demands of professional filmmaking:
- Durable All-Metal Housing: Ensures exceptional longevity and resistance to the wear and tear of continuous set use.
- Industry-Standard Gear Rings: Features standard 0.8 MOD gear rings on the focus, iris, and zoom (if applicable for a prime, typically just focus and iris) rings, ensuring seamless compatibility with follow focus systems and lens control motors.
- Clickless Iris Ring: Provides smooth, stepless aperture adjustments for seamless exposure transitions during recording.
- Minimized Focus Breathing: Engineered to significantly suppress focus breathing, maintaining a consistent angle of view when pulling focus, critical for professional video.
- Consistent Front Diameter: Designed to maintain a consistent front diameter (e.g., 95mm) across the Sigma Cine Prime series, simplifying matte box and filter changes.
Full-Frame / Large-Format Sensor Coverage:
Optimized for full-frame and large-format cinema cameras, this 25mm prime lens ensures full coverage of larger sensors, maximizing the resolution and artistic potential of modern cinematic cameras. This also provides the desired wide field of view without the crop factor of smaller sensors.
The Sigma Aizu Prime 25mm T1.3 LF Cinema Lens is an exceptional instrument for cinematographers seeking a wide-angle prime that offers unparalleled optical performance, extreme low-light capability, and robust cinematic construction for the most demanding professional productions. It’s a cornerstone lens for capturing expansive and visually stunning narratives.
Key Features:
- Exceptional 25mm Wide-Angle Prime: Ideal for immersive and expansive shots.
- Ultra-Fast T1.3 Maximum Aperture: Superb low-light performance and shallow depth of field.
- Designed for Full-Frame / Large-Format Sensors: Maximizes sensor utilization.
- Pristine Optical Quality: High sharpness, minimal aberrations, and consistent color.
- Robust, All-Metal Cine Housing: Built for professional durability.
- Industry-Standard 0.8 MOD Gear Rings: For seamless integration with cine accessories.
- Clickless Iris: Enables smooth exposure pulls.
- Minimized Focus Breathing: Maintains consistent angle of view during focus shifts.
- Consistent Front Diameter: Simplifies matte box and filter changes across the series.

