Sirui 40mm T1.8 1.33X S35 AF 40mm
Combining a fast T1.8 aperture with a 1.33x anamorphic squeeze, this lens delivers a 2.35:1 widescreen image and strong low-light performance directly in-camera. Its integrated STM autofocus supports eye tracking and subject detection, while the 614g build keeps it practical for gimbal and run-and-gun use. This lens is best for Nikon Z-mount filmmakers who want accessible, authentic anamorphic character without manual focus rigs.
Focal length 40mm
Mount Sony E
stabilization Yes
Weight 614 g
af type STM Step Motor
lens type prime
50 Overall Score
Price ₹0
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Snapshot
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 40 |
| Focal Length Max | 40 |
| Elements | 16 |
| Groups | 12 |
| Aspherical Elements | 1 |
Aperture
| Min Aperture | f/1.8 |
| Constant | Yes |
| Diaphragm Blades | 6 |
Build
| Mount | Sony E |
| Format | APS-C |
| Weight | 0.6 kg / 1.4 lbs |
AF & Stabilization
| AF Type | STM Step Motor |
| Stabilization | Yes |
Focus
| Min Focus Distance | 600 |
vs Competition
| Spec | Sirui 40mm T1.8 1.33X S35 AF 40mm | 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 | 40mm | 28-300mm | 18-50mm | 17-28mm | 12-35mm | 18-135mm |
| Max Aperture | - | f/4 | f/2.8 | f/2.8 | f/2.8 | f/3.5 |
| Mount | Sony E | Sony E | Sony E | Nikon Z | Micro Four Thirds | Sony E |
| Stabilization | true | true | false | false | true | true |
| Weather Sealed | false | true | true | true | true | false |
| Weight (g) | 614 | 590 | 290 | 450 | 306 | 326 |
| AF Type | STM Step Motor | 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 | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Sirui 40mm T1.8 1.33X S35 AF 40mm | 87.2 | 64.1 | 17 | 96.2 | 21 | 65.7 | 33.7 | 50.7 | 82.5 |
| 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 | 55.7 | 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 | 89.9 | 36.8 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87.2 | 86.7 | 76 | 85 | 88.4 | 83.6 | 68.1 | 70.2 | 36.8 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.6 | 81.5 | 86.1 | 50.7 | 86.7 | 83.6 | 80.5 | 85.5 | 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 | 89.9 | 82.5 |
