Name: SIRUI 40mm T1.8 1.33X S35 Frame Autofocus Anamorphic Lens
SKU: IGL31949710
Availability: InStock

STM Motor

Fast Autofocus

40mm

All- around Focal Length

1.33x

Constant Magnification

T1.8 Fast Aperture

Creamy Bokeh

614g

Super Compact

Two Optional Flares

Blue/Neutral Flare

Cinematic Look

Wide-screen 2.35:1

Advanced STM motor is added to achieve fast, accurate autofocus and eye focus, allowing you to focus on the subject during photo taking or follow the subject during video recording. Compared with manual focus anamorphic lens, this autofocus lens is easy to operate, making run-and-gun shooting more efficient than ever.

Object Tracking

Eye Focus

SIRUI Autofocus Anamorphic Lens

Common Manual Focus Anamorphic Lens

Fast autofocus with STM motor.

Accurate autofocus helps save time.

Difficult manual focus operation. Focus puller is necessary sometimes. Adjust focus again when the subject changes position. Suitable for teamwork.

ideal for street, humanist, landscape, portrait photography, etc.

Horizontally equivalent
to full frame 42mm

1.33x Squeeze Factor

The lens will produce a wide-screen aspect ratio of 2.35:1 in 16:9 shooting mode. This dynamic capability transforms your visuals into a captivating cinematic experience, highlighting intricate details and delivering accurate colors that will engage your audience and elevate your productions to a professional standard

*When shooting 16:9, this lens offers a standard 2.35:1 aspect ratio.

Due to the lack of autofocus in traditional anamorphic lenses, it has often been challenging to quickly capture images during shooting. Additionally, if photographers want to achieve a widescreen aspect ratio, they typically need to crop the image, which often results in a significant loss of content.

Spherical Lens

Anamorphic Lens

The 40mm is designed to facilitate video and photography, featuring a manual/auto focusing switching function and an option to between stepped and stepless aperture settings.

AF / MF Switch

Click/ De-click Switch

By eliminating obvious perspective distortion, characters are presented in a more natural way, as if seeing right through your eyes.

Large aperture makes sure more light enters the sensor in low light situation so that it can reduce ISO and you can get a pure night scene. Even in low-light situation, you can get outstanding image with sharp subject, shallow depth of field, natural and soft bokeh.

T1.8 Fast Aperture

Two options-blue flare and neutral flare–for your choice.

Suitable for sci-fi, mystery and music video scenes.

Provide you with different flare color according to different light source, ideal for commercial, interview or emotional shooting scenarios.

The 40mm produces a distinctive hexagonal elliptical bokeh when the aperture is fully open,because its unique optical design and aperture blade structure. As you stop down to T2.4, the bokeh transitions into the signature 1.33x elliptical shape, delivering the classic anamorphic aesthetic. This flexibility allows you to achieve different bokeh styles depending on your creative needs.

Distinctive hexagonal elliptical bokeh @T1.8

1.33x elliptical bokeh @T2.4

It is suitable for portrait shooting or detail capturing. It is also convenient and flexible for you to shoot in tight space.

1 aspherical lens and 5 cylindrical lenses are included. And the unique characteristics of this lens provide you with cinematic look images with excellent resolution, well-controlled chromatic aberration and breathing.

Focus Distance	Aspherical Lens	Cylindrical Lens

Reduce weight and correct chromatic aberration	Control light distribution and adjust aspect ratio

Compatible with gimbals, car rigs and suitable for handheld shooting.

Car

Handheld

Gimbal

Flexible shooting experience

Click ON/OFF

Stepless aperture or not

AF/MF Button

Switch between autofocus and manual focus

AFL Button

(E/Z-Mount)

Autofocus lock/custom setting

Standard Gears, 360° focus throws

Electronic contact for EXIF transfer

Filter size 77mm & outer front diameter 80mm for matte box

Download the latest firmware and upgrade the firmware via Type-C mount

Native mounts: E, X, Z, MFT – compatible with major cameras

Specifications

What’s in the Box

Package Box

Pouch

Lens

Strap

Back Lens Cap

Front Lens Cap

Warranty Card

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SIRUI 40mm T1.8 1.33X S35 Frame Autofocus Anamorphic Lens

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