Sigma 40mm T1.5 FF

Natural Perspective Cinematic Workhorse Prime

The Sigma 40mm T1.5 FF Cine Prime is a highly versatile full-frame lens positioned between standard and slightly compressed perspectives, making it one of the most balanced focal lengths in the FF High Speed Prime lineup. It is widely used for narrative filmmaking, commercial production, and documentary work where a natural but slightly cinematic field of view is required.

The T1.5 aperture provides strong low-light performance and excellent control over depth of field, allowing cinematographers to isolate subjects while maintaining environmental context. This makes the 40mm a flexible “in-between” lens for both dialogue-driven scenes and dynamic handheld shooting.

Optically, the lens delivers high resolution with excellent contrast and controlled aberrations across the full frame. Color reproduction is consistent with the entire Sigma FF cine series, ensuring seamless matching across focal lengths. Focus breathing is minimized, supporting stable framing during focus pulls.

Mechanically, the lens follows full cine standards with 0.8 MOD gearing, long and precise focus rotation, and robust all-metal construction. It integrates seamlessly into professional rigs, studio setups, and motorized lens control systems.

Features – Sigma 40mm T1.5 FF

• Full-frame standard cinematic prime
• T1.5 fast aperture for low-light performance
• Natural slightly compressed perspective
• High optical resolution for 6K–8K workflows
• Controlled distortion and aberration
• Minimal focus breathing
• Standard 0.8 MOD cine gearing
• Long focus rotation throw
• Smooth manual focus control
• Full metal cine housing
• Consistent Sigma FF color science
• Lightweight cine design
• VFX-friendly optical performance
• Engraved precision scales

Mounts

• PL Mount
• EF Mount
• Sony E-Mount

Technical Specifications

• Focal length: 40mm
• Maximum aperture: T1.5
• Format: Full Frame
• Iris blades: 9
• Focus rotation: approx. 180°
• Gear standard: 0.8 MOD
• Minimum focus distance: approx. 0.40 m
• Focus type: manual cine
• Breathing: minimized
• Coating: multi-layer AR
• Housing: metal cine body
• Front diameter: 95mm

Dimensions & Weight

• Length: approx. 123–157 mm (mount dependent)
• Weight: approx. 1.5–1.9 kg
• Front diameter: 95 mm