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
40 Overall Score
Price £0
No listings available
Snapshot
Pros & Cons
Pros
- Strong optical (78th percentile) 78th
Cons
- Below average build (15th percentile)
- Below average versatility (34th percentile)
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 | 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 | Canon RF 28-70mm f/2.8 IS STM | Panasonic LUMIX S S-R28200 | Sony G Master SEL70200GM2 |
|---|---|---|---|---|---|---|
| Focal Length | 35mm | 16-300mm | 18-300mm | 28-70mm | 28-200mm | 70-200mm |
| Max Aperture | T16 | f/3.5 | f/3.5 | f/2.8 | f/4 | f/2.8 |
| Mount | Interchangeable Mount with Included ARRI PL/Canon EF | Sony E | Fujifilm X | Canon RF | L-Mount | Sony E |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | true | true | true |
| Weight (g) | 998 | 615 | 92 | 495 | 413 | 1045 |
| AF Type | - | HLA | VXD linear motor | STM | Autofocus | XD Linear Motors |
| Lens Type | prime | zoom | zoom | zoom | macro | telephoto |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Stabilization |
|---|---|---|---|---|---|---|---|---|
| Sirui IronStar IRON-35-B 35mm | 54.7 | 61.3 | 14.6 | 45.3 | 77.5 | 49.4 | 34 | 35.6 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.7 | 84.2 | 57.9 | 86.5 | 98.8 | 76.9 | 99.6 | 99.1 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.1 | 74.9 | 96.3 | 88.4 | 73.5 | 76.9 | 99.2 | 80.5 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 85.5 | 86.1 | 67.2 | 77.4 | 84.4 | 83.7 | 77.4 | 98.2 |
| Panasonic LUMIX S S-R28200 Compare | 54.7 | 77.8 | 73.9 | 89.5 | 90.9 | 71.4 | 95.7 | 99.4 |
| Sony G Master SEL70200GM2 Compare | 98.1 | 90.7 | 33.5 | 33.1 | 87.1 | 83.7 | 79.4 | 80.5 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
