| Model Name | Sirui 40mm T1.8 1.33x Anamorphic Auto Focus Lens for Sony E (Neutral Flare) |
| Lens Mount | Sony E |
| Lens Format Coverage | Super35 / APS-C (≈37 mm Image Circle) |
| Horizontal Squeeze (Anamorphic) | 1.33x |
| Focal Length | 40 mm |
| Aperture Range | T1.8 to T22 |
| Optical Design | 16 Elements in 12 Groups |
| Aperture/Iris Blades | 11 |
| Minimum Focus Distance | 1.97' / 0.60 m |
| Focus Type | Autofocus / Manual (AF/MF switch, AFL button) |
| Gear Standard | 0.8 MOD |
| Focus Rotation | 360° |
| Filter Thread | 77 mm × 0.75 |
| Front Outside Diameter | 80 mm (matte box friendly) |
| Electronic Communication | Yes (EXIF via contacts); USB-C firmware update |
| Image Stabilization | No |
| Flare Color | Blue |
| Angle of View (S35) | Horizontal: 55° Vertical: 25.4° |
| Equivalent FOV | ≈42 mm (horizontal, full-frame equivalent) |
| Weight | 614 g / 1.35 lb |
| Aspect Ratio (Desqueeze) | 16:9 → 2.35:1 |
| Items Included | Front & Rear Caps; Lens Pouch with Strap; Limited 2-Year Manufacturer Warranty |