Sirui IronStar T1.9 1.5x Anamorphic Full Frame Cine Lenses 35mm&45mm&60mm PL/EF

Sirui IronStar T1.9 1.5x Anamorphic Full Frame Cine Lens Set – Cinematic Precision for Every Frame

The Sirui IronStar T1.9 1.5x Anamorphic Cine Lens Set (35mm, 45mm, and 60mm, available in PL and EF mounts) delivers true full-frame anamorphic performance with constant 1.5x squeeze, cinematic bokeh, and exceptional sharpness. Designed for professional filmmakers, these lenses combine technical precision with a timeless cinematic aesthetic, bringing authentic widescreen storytelling to your production.

Constant 1.5x Squeeze Ratio for True Cinematic Scope

With a 1.5x constant squeeze, the IronStar lenses provide a natural 2.25:1 aspect ratio in 3:2 mode or 2.66:1 in 16:9 mode—ideal for true anamorphic visuals. Compared to 1.33x lenses, the 1.5x design delivers wider framing, stronger background compression, and beautiful oval bokeh that amplifies cinematic depth.

Fast T1.9 Aperture – Sharp, Smooth, and Atmospheric

The ultra-fast T1.9 aperture ensures outstanding performance in low light while achieving a smooth and creamy background separation. Vertical bokeh transitions gently while subjects remain sharp, adding dimension and visual emotion to every scene.

Dual Flare Options – Blue and Neutral

The IronStar series offers two flare aesthetics. The Classic Blue Flare enhances sci-fi, action, and urban looks with a stylized cinematic touch. The Neutral Flare retains natural light rendition, ideal for humanistic and emotional storytelling.

Advanced Optical Design with 19–20 Elements

Each focal length features unique optical structures with ED, Aspherical, HRI, and Cylindrical lenses for minimal distortion, high resolution, and pleasing vintage tonality. Near-zero focus breathing ensures consistent framing and focus transitions for professional production environments.

Full-Frame Coverage and Interchangeable Mounts

Covering a full-frame 46mm image circle, the IronStar lenses deliver clean, wide imagery without vignetting or cropping. Each lens includes both PL and EF mounts with a dedicated toolkit, allowing quick mount swaps. The innovative back-focus adjustment design lets users fine-tune flange depth with precision—no disassembly or shims required.

Compact, Unified Design for Professional Workflow

All lenses share a consistent design with identical gear positions, 270° focus throw, dual markings (imperial/metric), and Φ95mm front diameter for standard matte box use. The metallic housing, 1/4" base thread, and unified color tone make them ideal for multi-camera setups and quick lens swaps on set.

What’s Included

• 35mm, 45mm, and 60mm Sirui IronStar 1.5x Anamorphic Lenses
• PL Mount (pre-installed) + EF Mount Modules
• Tool Kit for Mount Adjustment
• Lens Pouches
• Hard Carrying Case (for 3-lens kit)
• 92mm CPL and VND Filters (included in 3-lens kit only)

Specifications

Smart FAQ

Question: What cameras are compatible with the IronStar lenses?
Answer: The lenses cover full-frame sensors and are compatible with cameras supporting PL or EF mounts, including RED, ARRI, Canon, and Blackmagic full-frame systems.

Question: What is the advantage of a 1.5x squeeze ratio?
Answer: It delivers a wider 2.25:1 or 2.66:1 aspect ratio, stronger background compression, and signature oval bokeh for an authentic cinematic feel.

Question: Are the PL and EF mounts interchangeable?
Answer: Yes. Each lens includes both PL and EF mounts with tools, allowing seamless swapping without shims or disassembly.

Question: Do all lenses have identical gear positions?
Answer: Yes, the IronStar series maintains consistent gear placement, diameter, and focus throw for fast lens changes on set.

Question: What’s the warranty on these lenses?
Answer: Sirui provides a 3-year free replacement warranty for non-human damage and lifetime paid service for user-related damage.

Question: Do the lenses come with filters?
Answer: The 3-lens kit includes 92mm CPL and VND filters, while single-lens purchases include individual accessories and a protective pouch.