top of page

SIRUI IronStar 1.5x Anamorphic Full Frame Cine Lenses

1.5x丨T1.9丨User-interchangeable Mounts丨PL/EF丨35+45+60mm

ree

Anamorphic lenses have long been the gold standard for filmmakers seeking the iconic, widescreen cinematic look, but their prohibitive cost has typically kept them out of reach for independent creators. The promise of a professional, cinematic aesthetic—with distinct oval bokeh and signature lens flares—has always come with a price tag that few can afford. What if you could harness this professional quality without the astronomical cost, allowing you to tell your stories with the visual grandeur they deserve? SIRUI is democratizing cinema with its IRONSTAR 1.5x Anamorphic Full Frame Cine Lenses, now live on Kickstarter. This groundbreaking series of lenses is designed to deliver a perfect blend of vintage character and modern optical precision, bringing the magic of anamorphic filmmaking to a new generation of visual storytellers. I am definitely backing this project because I have been reading good reviews on SIRUI products previously and I need to venture out of OEM lenses.


Project Overview

  • Name and Creator: SIRUI IRONSTAR 1.5x Anamorphic Full Frame Cine Lenses by SIRUI.

  • What It Is: The IRONSTAR series is a collection of high performance anamorphic cine lenses for full frame cameras. The lenses feature a 1.5x constant squeeze ratio, a fast T1.9 aperture, and user interchangeable PL and EF mounts. They are designed to produce a classic cinematic widescreen look with distinct flares and oval bokeh, all at an accessible price point.


Key Features

  • 1.5x Constant Squeeze Ratio: The 1.5x squeeze ratio captures 1.5 times more horizontal information, which, when de squeezed in post production, creates a super wide 2.25:1 or 2.66:1 aspect ratio. This is a crucial feature for achieving the cinematic widescreen look.

  • Fast T1.9 Aperture: With a maximum aperture of T1.9, these lenses excel in low light situations, offering exceptional performance and beautiful depth of field. The fast aperture also contributes to a creamy, smooth bokeh with a distinct oval shape.

  • Dual Signature Flares: The lenses offer a choice between two signature flare styles. The classic Blue Flare is perfect for sci fi, mystery, and action scenes, while the Neutral Flare presents light in a more natural form, suitable for daily shoots and humanistic scenes.

  • Full Frame Coverage: The IRONSTAR lenses are designed to cover full frame image sensors, making them compatible with a wide range of cinema and mirrorless cameras.

  • User Interchangeable Mounts: To provide maximum versatility, the lenses come with user interchangeable PL and EF mounts. This feature allows them to be used across a variety of professional camera systems.

  • Minimal Focus Breathing: The lenses are engineered with well controlled optics that exhibit near zero focus breathing. This means the field of view remains consistent during focus shifts, which is essential for professional cinematic work.

  • Standardized Design: The lenses in the series—35mm, 45mm, and 60mm—have a uniform size and weight. This consistency is ideal for filmmakers who need to quickly swap lenses on gimbals or other rigs without rebalancing.

  • Premium Optical Quality: The IRONSTAR series is built with up to 20 precision optical elements, including Aspherical, HRI, and ED components. This advanced optical structure ensures sharp, accurate imagery with excellent contrast and minimal aberration.


Rewards

  • Super Early Bird 35mm Lens $999:

    • Includes: One (1) SIRUI IRONSTAR 35mm T1.9 lens with a native PL mount and one interchangeable EF mount. You can choose a blue or neutral flare.

  • Super Early Bird 45mm Lens $999:

    • Includes: One (1) SIRUI IRONSTAR 45mm T1.9 lens with a native PL mount and one interchangeable EF mount. You can choose a blue or neutral flare.

  • Super Early Bird 60mm Lens $999:

    • Includes: One (1) SIRUI IRONSTAR 60mm T1.9 lens with a native PL mount and one interchangeable EF mount. You can choose a blue or neutral flare.

  • Super Early Bird 3 Lens Kit $2,999:

    • Includes: One (1) 35mm, one (1) 45mm, and one (1) 60mm SIRUI IRONSTAR T1.9 lens set. This kit also comes with a hard case, a CPL filter, and a VND filter. You can choose a blue or neutral flare for the entire set.

  • Please check on other reward options available as this is not a complete reward list.


The Idea

  • Concept: The core idea behind the IRONSTAR series is to democratize high quality anamorphic filmmaking. SIRUI aims to make the distinctive, cinematic look of anamorphic lenses accessible to a wider audience of filmmakers, students, and content creators. They have achieved this by engineering a lens series that provides professional grade features and performance at a fraction of the cost of traditional cine lenses.

  • Inspiration: The inspiration for the IRONSTAR lenses stems from SIRUI's commitment to pushing the boundaries of what is possible in the lens market. Having already made a name for themselves with affordable anamorphic lenses for smaller formats, they set out to tackle the full frame market. The creators drew on their expertise to develop a product that meets the demands of modern cinematography, with a focus on vintage character, modern precision, and the versatility required for today's diverse shooting environments. They believe that great visual storytelling should not be limited by budget.





bottom of page