IronStar Series 1.5X Full-Frame Anamorphic Cine Lens

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FullFrame

Blue Flare

1.5x Constant
Squeeze Ratio

T1.9
Fast Aperture

Neutral Flare

Oval Bokeh

Interchangeable
PL/EF Mounts

0.65m
Minimum Focus Distance

Cinematic Feel

Consistent Across the Set

Three Lenses, Covering the Core Focal Range

From portraits to scenes, the set covers the core focal length
for documentary and storytelling use.

Horizontally equivalent to 23mm on full-frame

Wide-angle view, ideal for atmosphere-rich scenes,
storytelling, landscapes, etc.

Horizontally equivalent to 30mm on full-frame

Versatile focal length suitable for humanistic photography, environmental portraiture, real-life moments, etc.

Horizontally equivalent to 40mm on full-frame

Natural human-eye perspective, perfect for portraits, still subjects, details, etc.

75mm / 100mm / 135mm

are coming soon to complete the lens lineup and fully meet
the demands of commercial and creative work.

Coming Soon

1.5X Constant Squeeze Ratio

Compared to 1.33X, 1.5X provides a wider horizontal view, stronger background compression,
and 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

Fast Aperture, Sharp and Smooth

Ultra fast T1.9 aperture ensures sharp performance in low-light situations. Vertical bokeh transitions smoothly, with crisp subjects and blurred backgrounds, effortlessly creating a shallow depth-of-field look rich in dimensionality and artistic tension.

Dual Flares, Filmic Atmosphere

The IronStar series offers two signature anamorphic flare styles—Blue and Neutral—adding depth and cinematic atmosphere to every frame.

Classic Blue Flare

Perfect for creating cinematic looks in sci-fi, mystery, action, car scenes, and urban-style environments, etc.

Neutral Flare

Presents light in its natural form, suitable for daily shots, emotional advertising, natural and humanistic scenes, etc.

Cinema-Level Optical Quality

The IronStar series features 19-20 precision optical elements, including ED, aspherical and HRI components. It delivers sharp, accurate imagery with a subtle vintage glow—where modern engineering meets classic cinematic aesthetics.

Optical Structure

Tailored optical designs for each focal length, all meeting cinematic standards.

Focus Distance

Optical Structure

Aspherical Lens

Cylindrical Lens

HRI Glass

ED Glass

35mm

20 Elements in 16 Groups

1

6

5

1

45mm

19 Elements in 14 Groups

1

4

5

1

60mm

19 Elements in 14 Groups

1

5

1

Aspherical Lens

Precisely corrects spherical aberration and edge color aberration, decreases weight, and improves image purity.

ED Glass

Minimizes chromatic dispersion and aberration for accurate cinematic color and tone.

HRI Glass

Optimizes light transmission, reduces flare and ghosting, and enhances image contrast and depth.

Cylindrical Lens

Accurate optical design with multiple cylindrical elements helps prevent distortion, dispersion, and loss of clarity.

Well-Controlled Focus Breathing

Near-zero focus breathing during focus shifts maintains image stability and consistency, essential for professional cinematic workflows.

60mm T1.9

Excellent Close-Up Performance

35mm/45mm 0.65m (The minimum focus distance)

60mm 0.78m (The minimum focus distance)

Compact and Unified, Cinematic-Level Design

The IronStar series lenses feature a uniform appearance and consistent color temperature and tone, ensuring a cohesive visual style throughout the entire creative process.

Wide Compatibility

Filter thread: Φ92mm/3.6inch

Included: CPL and VND filters（kit only）

Front diameter: Φ95mm/3.7inch

(For standard cinema-grade matte boxes)

Identical Gear Position

Designed for fast lens swaps

easing the process of follow focus
and accessory adjustments

Compact & Lightweight

990g / 2.2lb (35mm)

Lighter than other full-frame
anamorphic lenses on the market

270° Focus Throw

Metallic Texture

1/4” Threaded Base

Enhance mounting stability

Dual Markings

Imperial & Metric

Efficient Production with Style

Meet diverse professional creative needs

Interchangeable PL/EF Mounts

Each lens comes with a native PL mount and includes an EF mount with dedicated tools. Users can effortlessly switch between mounts as needed, significantly enhancing the lens's cost-effectiveness and operational versatility.

Innovative Back Focus Adjustment

Simply turn the back focus adjustment ring with a tool instead of disassembling the mount or adding shims, providing a flexible and efficient operation experience.

Full-Frame Coverage
with a Larger Image Circle

The SIRUI IronStar series features a 46mm image circle, covering full-frame and even large-format cameras. It delivers clean, detailed, and wide images with no vignetting and cropping.

※ Aperture value undering wide open

35mm / 45mm / 60mm Image Circle

46mm

Unlock Professional Quality

Affordable anamorphic cine lenses enable indie filmmakers, small teams and commercial projects to create with cinematic precision.

Three-Year Replacement
Lifetime Warranty

Free replacement within 3 years for non-human damage (with valid proof of purchase). Lifetime paid repair service available for human-caused damage (e.g., drops, water, modifications).

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Perks

Packing List

Single Lens

Lens x 1

EF Mount Module x 1

Lens Pouch x 1

Tool Kit x 1

Lens Kit

Lens Hard Case x 1

92mm CPL x 1

Lens x 3

92mm VND x 1

EF Mount Module x 3

Tool Kit x 1

* Free CPL & VND filters included with the 3-lens kit only

Specifications

35mm

45mm

60mm

Lens Format Coverage

Full Frame

Focal Length

35mm

45mm

60mm

Max Aperture

T1.9

Min Aperture

T16

Lens Structure

20 Elements
in 16 Groups
(6 Cylindrical Lenses and 1 Aspherical Lens)

19 Elements
in 14 Groups
(4 Cylindrical Lenses and 1 Aspherical Lens)

19 Elements
in 14 Groups
(5 Cylindrical Lenses and 1 Aspherical Lens)

Aperture Blade

16

Shooting Distance

0.65M (2ft 2in)～∞

0.78M (2ft 7in)～∞

Minimum Focus Distance

0.65M (2ft 2in)

0.78M (2ft 7in)

Focus Method

MF

Max Magnification

1：15.15 (V),
1：23.26 (H)

1：12.5 (V),
1：19.23 (H)

1：11.36 (V),
1：17.86 (H)

FOV (Full Frame)

39.64 (V),
79.98 (H),
83.88 (D)

32.08 (V),
67.55 (H),
71.1(D)

23.59 (V),
50.63 (H),
53.82 (D)

Filter Size

M92*P0.75

Focus Ring Rotation Angle

270°

Max Diameter

φ95mm / 3.7inch
(EF Mount / PL Mount)

Focus Ring Diameter

φ89.6mm / 3.5inch

Aperture Ring Diamete

φ81.6mm / 3.2inch

Length
(Exclude Lens Cap)

EF Mount:
131mm / 5.2inch
PL Mount:
123mm / 4.8inch

EF Mount:
137.5mm / 5.4inch
PL Mount:
129.5mm / 5.1inch

EF Mount:
142mm / 5.6inch
PL Mount:
134mm / 5.3inch

Weight
(Exclude Lens Cap)

EF Mount:
998g / 2.2lb
PL Mount:
1024g / 2.3lb

EF Mount:
990g / 2.2lb
PL Mount:
1020g / 2.2lb

EF Mount:
1023g / 2.3lb
PL Mount:
1044.6g / 2.3lb

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