Sirui IronStar 45mm T1.9 Lens - Neutral Flare
Sirui IronStar 45mm T1.9 Lens - Neutral Flare
SKU:
SIR-IRON-45-N
Regular price
£940.83 GBP ex VAT
£1,129.00 GBP inc VAT
£1,129.00 GBP inc VAT
Regular price
ex VAT
Sale price
£940.83 GBP ex VAT
£1,129.00 GBP inc VAT
Unit price
per
£1,129.00 GBP inc VAT
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- Details
- Features
- Specifications
- What's Included
Three Lenses, Covering the Core Focal Range
From portraits to scenes, the set covers the core focal length for documentary and storytelling use.
IronStar 35mm
Horizontally equivalent to 23mm on full-frame
Wide-angle view, ideal for atmosphere-rich scenes, storytelling, landscapes, etc.
IronStar 45mm
Horizontally equivalent to 30mm on full-frame
Versatile focal length suitable for humanistic photography, environmental portraiture, real-life moments, etc.
IronStar 60mm
Horizontally equivalent to 40mm on full-frame
Natural human-eye perspective, perfect for portraits, still subjects, details, etc
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.
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.
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.
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
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.
Unlock Professional Quality
Affordable anamorphic cine lenses enable indie filmmakers, small teams and commercial projects to create with cinematic precision.
Manufacturer 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).
- Full Frame
- 1.5x Constant Squeeze Ratio
- T1.9 Fast Aperture
- Blue or Neutral Flare
- Oval Bokeh
- Interchangeable PL/EF Mounts
- 0.65 Minimum Focus Distance
- Consistent Across the Set
| Lens Format Coverage: | Full Frame |
| Focal Length: | 45mm |
| Max Aperture: | T1.9 |
| Min Aperture: | T16 |
| Lens Structure: | 19 Elements in 14 Groups (4 Cylindrical Lenses and 1 Aspherical Lens) |
| Aperture Blade: | 16 |
| Shooting Distance: | 0.65M (2ft 2in)～∞ |
| Minimum Focus Distance: | 0.65M (2ft 2in) |
| Focus Method: | MF |
| Max Magnification: | 1: 12.5 (V), 1: 19.23 (H) |
| FOV (Full Frame): | 32.08 (V), 67.55 (H), 71.1(D) |
| Filter Size: | M92*P0.75 |
| Focus Ring Rotation Angle: | 270° |
| Max Diameter: | φ95mm / 3.7inch |
| Focus Ring Diameter: | φ89.6mm / 3.5inch |
| Aperture Ring Diameter: | φ81.6mm / 3.2inch |
| Length: | EF Mount: 137.5mm / 5.4inch PL Mount: 129.5mm / 5.1inch |
| Weight: | EF Mount: 990g / 2.2lb PL Mount: 1020g / 2.2lb |
- 1x 45mm T1.9 Anamorphic Lens - Neutral Flare
- 1x EF Mount Module
- 1x Lens Pouch
- 1x Tool Kit