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Capture a widescreen, cinematic look with your full-frame camera and the IronStar 35mm T1.9 Anamorphic 1.5x Lens from Sirui. This lens features a fast T1.9 maximum aperture for optimal low-light capture and subject separation, blue flares, oval bokeh, 0.8 MOD gearing, and interchangeable ARRI PL and Canon EF mounts.
Capture a widescreen, cinematic look with your full-frame camera and the IronStar 35mm T1.9 Anamorphic 1.5x Lens from Sirui. This lens features a fast T1.9 maximum aperture for optimal low-light capture and subject separation, blue flares, oval bokeh, 0.8 MOD gearing, and interchangeable ARRI PL and Canon EF mounts.
Anamorphic Aesthetic
This lens creates a 1.5x squeeze ratio and unique oval bokeh.
Its optical design enhances subject separation and depth.
Horizontally equivalent to 23mm on a full-frame sensor.
Blue lens flares produce a classic anamorphic streak effect when pointed at sharp beams of light.
Interchangeable Lens Mount
Sirui's IronStar prime lenses come with both an ARRI PL and Canon EF mount, letting you use them with a variety of cine-style, mirrorless, and DSLR cameras.
Cine-Style Design
This 35mm IronStar lens features a 95mm front outside diameter, and its 0.8 MOD focus and iris gears are compatible with most standard matte boxes, follow focus units, and lens control systems.
The 270° focus barrel rotation lets you precisely pull focus.
Sirui IRONSTAR Anamorphic FF 35mm T1.9 Specs
Key Specs
Focal Length
35mm
Maximum Aperture
T1.9
Lens Mount
Interchangeable Mount with Included ARRI PL/Canon EF
Lens Format Coverage
Full-Frame (46 mm Image Circle)
Filter Thread
92 mm x 0.75
Image Stabilization
No
Electronic Communication
Yes
Focal Length
35mm
Maximum Aperture
T1.9
Minimum Aperture
T16
Lens Mount
Interchangeable Mount with Included ARRI PL/Canon EF
1:23.26 Macro Reproduction Ratio 0.04x Magnification
Aperture/Iris Blades
16
Image Stabilization
No
Lens Mounting
2x 1/4"-20 (via Included Support Foot)
Gear Standard
Focus, Iris: 0.8 MOD
Gear Rotation
Focus: 270°
Electronic Communication
Yes
Diameter
Front: 3.7" / 95 mm
Length
5.2" / 131 mm (Canon EF) 4.8" / 123 mm (ARRI PL)
Weight
2.2 lb / 998 g 2.3 lb / 1 kg
Packaging Info
Package Weight
4.96 lb
Box Dimensions (LxWxH)
11.8 x 7 x 6.3"
Sirui IRONSTAR Anamorphic FF 35mm T1.9 Reviews
See any errors on this page?
Any chance Sirui will notice that the whole world ...
Any chance Sirui will notice that the whole world does not make 92mm threaded VND filters and 1. Standardize or 2. Make some? 😐
Asked by: Brian
Or you can realize that rest of the world uses cine lenses with a mattebox. Best of luck to ya fella.
Answered by: Matt
Date published: 2026-02-15
While matte boxes are great, are there any budget ...
While matte boxes are great, are there any budget solutions for close focus compatible with these lenses?
Asked by: Jason
Here is a list of budget friendly matte boxes that accommodate for close focus on the Sirui IronStar Anamorphic Lenses:
SmallRig Mini Matte Box Lite
https://bhpho.to/4nFaliB
SmallRig LITE Matte Box with Adjustable Clamp
https://bhpho.to/43kfiGp
Tilta Mini Matte Box
https://bhpho.to/4hMAGdc
