SIRUI IronStar 75/100/135 mm T1.9 1.5x Full-Frame Anamorphic Cine Lens

Name: SIRUI IronStar 75/100/135 mm T1.9 1.5x Full-Frame Anamorphic Cine Lens
Brand: SIRUI Optical GmbH
Price: 1179.0 EUR
Availability: OutOfStock

Key Features

Focal Length

75mm 100mm 135mm 3 Lens Set

Mount

User-interchangeable EF/PL Mount

Flare

Neutral Blue

Product variants

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IronStar Series

1.5x full-frame anamorphic cinema lens

3+3｜IronStar 1.5x full-frame anamorphic cinema lens set

Bring widescreen back to life with IronStar

The first set includes three lenses – 35mm, 45mm, and 60mm – for basic framing needs. After adding the 75mm, 100mm (macro), and 135mm lenses to complete the ecosystem, the IronStar set now fully supports both commercial and artistic film projects. The 100mm lens with a close focusing limit of 0.3 m breaks the boundaries of anamorphic close-ups and enhances detail reproduction at close range. Identical gear position and front diameter ensure consistent optical characteristics across the entire set.

Three new focal lengths introduced

From mid to telephoto range – versatile for all subjects and perfect for widescreen composition!

Natural storytelling

Horizontally equivalent to 50mm in full frame. Human eye perspective – ideal for dialogues and storytelling. Balanced separation of subject and background. Minimum focusing distance: 0.8 m

Macro + Close-up

Horizontally equivalent to 66mm in full frame. Suitable for food, jewelry details, and product advertising – combines close focusing with cinematic perspective.Minimum focusing distance: 0.3 m

With a close focusing limit of 0.3 m and 0.5x magnification, the 100mm lens captures the finest micro details at short distances. More than just close-ups – it delivers true anamorphic macro performance, combining the aesthetics of widescreen cinema with detailed macro shots.

Portrait + Close-upStrong compression

Horizontally equivalent to 90mm in full frame. Strong compression and excellent subject separation – ideal for isolating details and subjects in narrative films from busy backgrounds.Minimum focusing distance: 0.8 m

1.5x constant squeeze ratio

Compared to 1.33x, 1.5x offers a wider horizontal field of view, stronger background compression, and a more elliptical bokeh, enhancing the overall cinematic look and feel.

3:2 mode → 2.25:1 widescreen aspect ratio

16:9 mode → 2.66:1 widescreen aspect ratio

16:9 output in 6:5 mode

*Simply achieve a classic 2.4:1 widescreen with minimal cropping.

Support for vertical shooting

PL mount with 360° four-way rotation positioning supports both horizontal and vertical production. Together with a vertical monitor, this enables a professional on-set monitoring system that overcomes traditional aspect ratios and opens up a new cinematic, vertical widescreen storytelling style.

3:2 sensor
(vertical 2:3)

Final output: 3:3 square
(with 1.5x de-squeeze)

Generous image circle

The IronStar lens series features a 46 mm image circle, ensuring full coverage of all full-frame mirrorless camera sensors. It delivers a clean, vignette-free image and offers a truly immersive cinema experience.

Image circle 46 mm

Full frame

※ At fully open aperture

Sharp and smooth

The extremely fast aperture of T1.9 ensures sharp performance in low light conditions. Vertical blur gradients (bokeh) are smooth, with clear subjects and blurred backgrounds – effortlessly creating a shallow depth of field look rich in depth and artistic tension.

*35/45/60/75 mm – Maximum aperture T1.9

100 mm (0.5x macro)/135 mm – Maximum aperture T2.8

Cinematic atmosphere

Features two flare styles – blue and natural flare – that enhance the anamorphic look with cinematographic aesthetics.

Classic blue flare

Ideal for creating cinematic looks in sci-fi, mystery, action, car scenes, as well as urban environments and much more.

Neutral flare

Presents light in its natural form – suitable for everyday shots, emotional commercials, naturalistic and humanistic scenes, and more.

Outstanding optical performance

The IronStar lens series features 19 precise optical elements, including aspherical and cylindrical lenses, to reduce weight and produce sharp images with a subtle vintage glow – where modern technology meets classic cinematographic aesthetics.

Aspherical lens

Precisely corrects spherical aberrations and chromatic edge errors, reduces weight, and improves image purity.

Cylindrical lens

Precise optical design with multiple cylindrical elements helps avoid distortion, dispersion, and loss of clarity.

Well-controlled focus breathing

Almost no focus breathing during focus changes – ensures image stability and consistency, essential for professional cinema workflows.

100 mm T2.8

Uniform set design

The IronStar series lenses are designed with a uniform appearance and matched color temperature and tone characteristics, ensuring a coherent visual style throughout the creative process.

Wide compatibility

Filter thread: φ92 mm / 3.6 inches, CPL and VND filters included

Front diameter: φ95 mm / 3.7 inches, compatible with standard

Cinema matte boxes

Identical gear position

Designed for quick lens changes, facilitating follow-focus tracking and accessory adjustments.

Compact and lightweight

The lightest lens weighs 1085 g / 2.39 lb

270° focus rotation

Metallic texture

Compact and lightweight

The lightest weighs 1085 g / 2.39 lb

Interchangeable PL/EF mount module

Each lens comes with a native PL mount and includes an EF mount with the corresponding tool. Users can easily switch between mounts, greatly enhancing the lens's cost-effectiveness and flexibility.

PL mount

EF mount

Innovative back focus adjustment

Simply rotate the back focus adjustment ring instead of disassembling the mount or adding shims—for flexible and convenient operation.

Born for professional quality

Affordable anamorphic cinema lenses enable independent filmmakers, small teams, and commercial project groups to work with cinematographic precision.

Free replacement within three years for non-human-caused damage (with valid proof of purchase). Lifetime paid repair service available for human-caused damage (e.g., drops, water, modifications).

* For more details, see the warranty card.