Sirui IronStar 45mm T1.9 1.5x Anamorphic Full Frame Cine Lense PL/EF

Sirui IronStar 45mm T1.9 1.5x Anamorphic Full Frame Cine Lens - Cinematic precision for creative productions

The Sirui IronStar 45mm T1.9 1.5x Anamorphic Cine Lens (PL/EF) combines classic anamorphic aesthetics with modern optical technology. With a constant 1.5x squeeze ratio, full-frame coverage and bright T1.9 aperture, this lens gives filmmakers the ability to create images with stunning breadth, character and cinematic depth - without compromise.

Full-frame coverage and 1.5x compression

The IronStar 45mm delivers true anamorphic image quality with a 1.5x compression factor that creates wide 2.25:1 (3:2 mode) and 2.66:1 (16:9 mode) images. This combination of width and natural imaging makes it ideal for narrative films, music videos, commercials and documentaries.

Perfect balance between width and natural perspective

With a horizontal field of view equivalent to 30mm at full frame, the 45mm version captures both environment and subject in harmonious balance. It's ideal for portraits, reportage, interior scenes and natural cinematic compositions where proximity and atmosphere need to be combined in the same frame.

T1.9 aperture for cinematic light control

The fast T1.9 aperture delivers great results even in low light, producing soft bokeh with rich color reproduction. Vertical blur seamlessly transitions to horizontal anamorphic effects for an aesthetically pleasing image with depth and realism.

Professional optical construction

The Sirui IronStar 45mm consists of 19 elements in 14 groups including ED, HRI, aspherical and cylindrical lens elements. The result is sharp, color-correct images with minimal optical errors and high contrast. Almost non-existent focus breathing ensures stability during focus shifts, making it ideal for professional film production.

Two signature flare options

The IronStar series offers Blue Flare for a classic sci-fi look and Neutral Flare for more natural light rendering. Both create a unique cinematic feel depending on the tone and style of the production.

Switch between PL and EF - without a workshop

The lens comes with both PL and EF mounts and you can easily switch between them with the included tool. The innovative back focus adjustment allows you to fine-tune the flange distance quickly, without having to disassemble the lens.

Compact and rig-friendly design

Weighing less than 1 kg and with a front diameter of 95 mm, the IronStar 45mm is perfectly suited for gimbal, steadicam and matte box. It features a 270° focus ring, dual markings (meter/foot) and robust metal construction for reliable use on set.

What's included

• Sirui IronStar 45mm T1.9 1.5x Anamorphic Cine Lens
• PL mount (pre-assembled) + EF mount with tools
• Protective pouch
• Tool kit for mounting and back focus adjustment
• Warranty card and manual

Specifications

Smart FAQ

Question: Does the Sirui IronStar 45mm fit all full frame cameras?
Answer: Yes, the lens covers full frame and is compatible with PL and EF mounts on cameras from RED, Canon, ARRI, Blackmagic and more.

Question: How is the 45mm different from the 35mm and 60mm versions?
A: The 45mm version has a more natural perspective equivalent to 30mm horizontally, making it ideal for portraits and environmental shots.

Question: Is the 1.5x compression better than 1.33x?
Answer: Yes, 1.5x gives a wider image and more distinct oval bokeh, resulting in a stronger cinematic look.

Question: Can I easily switch between PL and EF mode?
Answer: Yes, both mounts are included and can be quickly switched with the included tool - no additional adapter required.

Question: Is the IronStar 45mm light enough for gimbal use?
Answer: Yes, with its lightweight metal construction of approximately 1 kg, it works great on modern gimbals and steadicams.

Question: Does it include CPL or VND filters?
A: Only the 3-lens kit includes CPL and VND filters. Individual lenses come with protective bag and tool kit.