Sirui IronStar IRON-35-B
The full-frame 35mm T1.9 anamorphic lens delivers a 1.5x squeeze, fast light gathering, and blue flares with a 16-blade aperture for oval bokeh. Its interchangeable ARRI PL/Canon EF mount, 0.8 MOD gears with 270° focus rotation, and 92mm filter thread suit matte box cinema rigs despite a 998g weight. This lens is best for cinematographers and commercial video shooters who prioritize deliberate anamorphic character over travel portability.
About This Lens
The full-frame 35mm T1.9 anamorphic lens delivers a 1.5x squeeze, fast light gathering, and blue flares with a 16-blade aperture for oval bokeh. Its interchangeable ARRI PL/Canon EF mount, 0.8 MOD gears with 270° focus rotation, and 92mm filter thread suit matte box cinema rigs despite a 998g weight. This lens is best for cinematographers and commercial video shooters who prioritize deliberate anamorphic character over travel portability.
- Focal length 35mm
- Max aperture T16
- Mount Interchangeable Mount with Included ARRI PL/Canon EF
- Weight g 998
- Lens type prime
Overview
Performance
Pros & Cons
Pros
- Strong optical (79th percentile) 79th
Cons
- Below average build (15th percentile) 15th
- Below average versatility (34th percentile) 34th
Specifications
Full Specifications
Optics
| Type | prime |
| Focal Length Min | 35 |
| Focal Length Max | 35 |
| Elements | 20 |
| Groups | 16 |
Aperture
| Max Aperture | T16 |
| Min Aperture | T1.9 |
| Constant | Yes |
| Diaphragm Blades | 16 |
Build
| Mount | Interchangeable Mount with Included ARRI PL/Canon EF |
| Format | full-frame |
| Weight | 1.0 kg / 2.2 lbs |
| Filter Thread | 92 |
AF & Stabilization
| Stabilization | No |
Focus
| Min Focus Distance | 650 |
| Max Magnification | 1:23.26 |
vs Competition
| Spec | Sirui IronStar IRON-35-B | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon NIKKOR Z 28-400mm f/4-8 VR | Panasonic LUMIX S S-R28200 | Viltrox 13mm f/1.4 F1.4 Z-Mount |
|---|---|---|---|---|---|---|
| Focal Length | 35mm | 16-300mm | 18-300mm | 28-400mm | 28-200mm | 13mm |
| Max Aperture | T16 | f/3.5 | f/3.5 | f/4 | f/4 | f/1.4 |
| Mount | Interchangeable Mount with Included ARRI PL/Canon EF | Sony E | Fuji X | Nikon Z | L-Mount | Nikon Z |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | true | true | false |
| Weight (g) | 998 | 615 | 92 | 726 | 413 | 415 |
| AF Type | - | HLA | VXD linear motor | STM | Autofocus | STM |
| Lens Type | prime | zoom | zoom | zoom | macro | Wide-Angle |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | Versatility | Stabilization |
|---|---|---|---|---|---|---|---|---|
| Sirui IronStar IRON-35-B | 54.1 | 59.8 | 14.9 | 46.1 | 78.6 | 48.3 | 34 | 35.7 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.1 | 84 | 59 | 85.6 | 98.8 | 76.4 | 99.7 | 99.1 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 74.1 | 96.5 | 87.5 | 74.5 | 76.4 | 99.3 | 80.9 |
| Nikon NIKKOR Z 28-400mm f/4-8 VR Compare | 86.5 | 77 | 51.5 | 81.2 | 96.9 | 70.7 | 98.9 | 98.3 |
| Panasonic LUMIX S S-R28200 Compare | 54.1 | 77 | 74.3 | 71.1 | 91.1 | 70.7 | 95.7 | 99.4 |
| Viltrox 13mm f/1.4 F1.4 Z-Mount Compare | 86.5 | 96.5 | 42.2 | 89.2 | 82.5 | 96.2 | 34 | 80.9 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
