Sirui IronStar IRON-35-B 35mm
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
Aperture T16
Mount Interchangeable Mount with Included ARRI PL/Canon EF
Weight 998 g
lens type prime
38 Overall Score
Price £0
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Snapshot
The proof
Performance
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 35mm | Tamron Di III VC VXD 28-300mm f/4-7.1 | Sigma Contemporary 18-50mm f/2.8 DC DN | Nikon NIKKOR Z 17-28mm f/2.8 | Panasonic Leica DG Vario-Elmarit H-ES12035 | Sony E 18-135mm f/3.5-5.6 OSS |
|---|---|---|---|---|---|---|
| Focal Length | 35mm | 28-300mm | 18-50mm | 17-28mm | 12-35mm | 18-135mm |
| Max Aperture | T16 | f/4 | f/2.8 | f/2.8 | f/2.8 | f/3.5 |
| Mount | Interchangeable Mount with Included ARRI PL/Canon EF | Sony E | Sony E | Nikon Z | Micro Four Thirds | Sony E |
| Stabilization | false | true | false | false | true | true |
| Weather Sealed | false | true | true | true | true | false |
| Weight (g) | 998 | 590 | 290 | 450 | 306 | 326 |
| AF Type | - | VXD linear motor | stepping motor | Stepping Motor | Autofocus | Linear motor |
| Lens Type | prime | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Stabilization |
|---|---|---|---|---|---|---|---|---|
| Sirui IronStar IRON-35-B 35mm | 53.6 | 50 | 18 | 52.4 | 81.3 | 40.1 | 33.7 | 36.8 |
| Tamron Di III VC VXD 28-300mm f/4-7.1 Compare | 98.1 | 77.4 | 65.3 | 85 | 96.8 | 65.7 | 97.8 | 82.5 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 87.2 | 81.5 | 86.7 | 90.8 | 82.5 | 83.6 | 78.5 | 36.8 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87.2 | 86.7 | 76 | 85 | 88.4 | 83.6 | 68.1 | 36.8 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.6 | 81.5 | 86.1 | 50.7 | 86.7 | 83.6 | 80.5 | 96.9 |
| Sony E 18-135mm f/3.5-5.6 OSS Compare | 98.1 | 74.9 | 73.3 | 40.1 | 78.9 | 77 | 95.8 | 82.5 |
