Overview
The Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens combines cinematic quality with convenient autofocus, designed for Super 35 Leica L-mount cameras. It offers exceptional low-light performance and unique oval-shaped bokeh with a 1.33x squeeze factor.
Core Features
Autofocus Anamorphic Prime
Combining the cinematic quality of 2.35:1 widescreen imagery with convenient subject-tracking autofocus, this lens ensures exceptional low-light performance and oval-shaped bokeh with a 1.33x squeeze factor.
Compact Design with Autofocus
Powered by a precision STM stepping motor, the Sirui 40mm delivers smooth, accurate, and quiet autofocus. It features eye-tracking capability and buttons for focus mode and autofocus lock, providing complete creative control. The lens incorporates a USB-C port for firmware updates, ensuring lasting performance. Its compact and lightweight design is ideal for handheld, gimbal, and run-and-gun shooting.
Anamorphic Aesthetic
Blue Flares
- 1.33x squeeze factor for 2.35:1 images in 16:9 mode.
- Unique oval bokeh enhances subject separation and depth.
- Horizontal field of view equivalent to 22mm full-frame lens.
- Horizontal blue streak effects create a classic anamorphic look.
Optical Performance
- A 37mm image circle covers Super 35 sensors or full frame with vignette.
- T1.8 to T22 aperture for low-light performance and depth of field control.
- 60 cm minimum focus distance for close-up shots.
- Aspherical lens element minimizes chromatic aberration.
Advanced Autofocus
- STM stepping motor for smooth, silent autofocus.
- Eye-tracking autofocus for reliable subject tracking.
- AF/MF switch to toggle between autofocus and manual focus.
- AF-Lock button to hold focus or recall custom focus settings.
Practical Design
- Uniform gear positioning with Sirui 40mm AF Anamorphic Lens.
- Compact and lightweight design.
- 360° focus throw with standard 0.8 MOD gearing.
Versatile Compatibility
- Compatible with Leica L-mount cameras.
- Standard 77mm front filter thread.
- Update lens firmware via the USB-C port.
Specifications
| Focal Length | 40 mm |
| Maximum Aperture | T1.8 |
| Minimum Aperture | T22 |
| Lens Mount | L-Mount |
| Interchangeable Mount | No |
| Lens Format Coverage | Super35/APS-C |
| Image Circle | 37.0 mm |
| Angle of View | Super 35 Horizontal: 55° Vertical: 25.4° |
| Optical Design | 16 Elements in 12 Groups |
| Filter Thread | 77 mm x 0.75 |
| Minimum Focus Distance | 60 cm |
| Aperture/Iris Blades | 11 |
| Image Stabilization | No |
| Lens Mounting | No |
| Gear Standard | Focus, Iris: 0.8 MOD |
| Gear Rotation | Focus: 360° |
| Electronic Communication | Yes |
| Camera Connection | Flat Contacts (EXIF) Data |
| Diameter | Front: 80 mm |
| Length | Not Specified by Manufacturer |
| Weight | 614 g |
Packaging Info
| Package Weight | 1.37 kg |
| Box Dimensions (LxWxH) | 22.4 x 18.3 x 15.2 cm |
What's Included
- Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (Leica L, Blue Flares)
- Carrying Pouch
- Carrying Strap
- Front Lens Cap
- Back Lens Cap
- Barcode: 82725
- Supplier Code: 40AF133X-LB