Irix Cine Lens 11mm T4.3 Canon RF Mount Metric Scale

The Irix Cine Lens 11mm T4.3 for Canon RF mount stands apart as an ultra-wide full-frame cine prime that delivers an expansive 123° diagonal angle of view with remarkably controlled distortion. Built around a refined 16-element optical design with 4 high-refractive, 3 extra-low dispersion, and 2 aspherical elements, it tames chromatic aberration and field curvature for crisp, edge-to-edge clarity. The T4.3 maximum aperture is consistent across the entire focus range, and the 9-blade rounded iris produces smooth, organic bokeh even at wide angles. A metric focus scale and 0.8 MOD gears on both focus and iris rings make it ready for professional follow-focus systems and cine rigs.

Highlights

• Ultra-wide 11mm focal length with full-frame coverage and 123° diagonal field of view
• Fast T4.3 aperture with 9-blade rounded diaphragm for cinematic depth of field
• Advanced optical construction: 16 elements in 15 groups, including 4 HR, 3 ED, and 2 aspherical elements
• Manual focus with metric scale and 0.8 MOD gear rings for seamless integration with cine accessories
• Weather-sealed aluminum-magnesium alloy barrel with 4 rubber seals for demanding environments
• Irix Neutrino coating reduces flare and ghosting while maintaining high contrast

In daily use

On set or in the field, the lens's solid yet lightweight construction inspires confidence. The focus ring offers a long, precise throw ideal for critical focusing, and the metric markings are laser-engraved for durability. The 95mm front diameter accommodates professional matte boxes, while the lack of front filter thread is typical for ultra-wide cine lenses. The close focusing distance of 0.27 m allows dramatic wide-angle close-ups with a magnification ratio of 1:10. The lens is fully manual with no electronic communication, ensuring compatibility with a wide range of cine rigs and follow-focus systems.

Full specifications

• Lens type: Cine Prime Lens
• Focal length: 11mm
• Maximum aperture: T4.3
• Minimum aperture: T22
• Lens mount: Canon RF
• Image circle: Full-frame
• Focus type: Manual focus
• Focus scale: Metric
• Minimum focus distance: 0.27 m (10.6 inches)
• Optical design: 16 elements in 15 groups (4 HR, 3 ED, 2 aspherical)
• Diaphragm blades: 9 (rounded)
• Gear mod (focus/iris): 0.8 MOD
• Angle of view (diagonal): 123°
• Front diameter: 95 mm
• Weather sealing: Yes (4 rubber seals)
• Construction material: Aluminum-magnesium alloy
• Lens coating: Irix Neutrino coating
• Filter thread: No front filter thread
• Magnification ratio: 1:10
• Electronic communication: No

Final note

The Irix 11mm T4.3 is a specialized tool for filmmakers seeking an ultra-wide perspective with professional cine features. Its robust build, precise manual controls, and exceptional optical performance make it a reliable choice for high-end productions.