Sigma Aizu Prime 75mm T1.3 LF

High-Speed Cinematic Large Format Prime

The Aizu Prime 75mm T1.3 LF delivers a classic cinematic portrait perspective combined with the exceptional optical speed and large-format coverage that define Sigma’s Aizu Prime lineup. Designed specifically for professional cinema production, the lens combines refined subject separation, cinematic rendering, and modern high-resolution optical performance within a compact cine housing.

The 75mm focal length is widely regarded as one of the most cinematic portrait perspectives, providing elegant compression, strong subject isolation, and natural visual depth. This makes the lens particularly suitable for dramatic close-ups, beauty cinematography, commercials, fashion production, narrative filmmaking, and emotional dialogue scenes.

Optically, the lens combines exceptional sharpness with an intentionally organic cinematic rendering profile. Skin tones remain natural and dimensional while highlights transition smoothly and out-of-focus areas maintain refined softness. The result is a cinematic image with emotional depth and modern technical precision.

The constant T1.3 aperture enables filmmakers to create extremely shallow depth of field while maintaining excellent low-light capability. Subject isolation appears highly cinematic, while Sigma’s cinema-focused optical design minimizes focus breathing and distortion to preserve framing consistency during focus pulls and moving shots.

Mechanically, the lens features a robust full-metal cine housing with standardized gear positions, consistent front diameter, and long 270° focus rotation for highly precise manual operation. Despite its high-speed optical design and large-format image circle, the lens remains compact enough for handheld, Steadicam, and gimbal workflows.

Support for Cooke /i Technology and ZEISS eXtended Data ensures compatibility with modern metadata-driven cinema workflows for VFX and virtual production applications.

Features – Aizu Prime 75mm T1.3 LF

• Constant ultra-fast T1.3 aperture
• Full-frame large-format image coverage
• Cinematic portrait focal length
• Exceptional subject isolation
• Organic cinematic rendering
• High-resolution optical performance
• Excellent low-light capability
• Smooth cinematic focus falloff
• Controlled focus breathing
• Minimal geometric distortion
• Refined cinematic bokeh
• 46.3mm image circle
• Standardized cine mechanics
• Long 270° focus throw
• Compact lightweight cine housing
• Full metal professional construction
• Compatible with Cooke /i Technology
• Supports ZEISS eXtended Data

Mounts

• PL Mount
• Sony E-Mount

Technical Specifications

• Lens type: Large Format Cinema Prime Lens
• Focal length: 75mm
• Aperture range: T1.3 – T22
• Image circle: 46.3mm
• Iris blades: 13-blade diaphragm
• Minimum focus distance: 0.85m / 2'9"
• Front diameter: 95mm
• Focus rotation: 270°
• Iris rotation: 70°
• Gear standard: 0.8 MOD
• Metadata support: Cooke /i + ZEISS eXtended Data
• Housing: Full metal cine construction
• Designed for professional cinema cameras
• Compatible with professional cine accessories
• Optimized for 6K–8K workflows

Dimensions & Weight

• Length (PL Mount): approx. 125mm / 5"
• Length (Sony E-Mount): approx. 159mm / 6.3"
• Weight (PL Mount): approx. 1.8kg / 4.0lb
• Weight (Sony E-Mount): approx. 1.9kg / 4.2lb