SIRUI 40mm T1.8 1.33X S35 AF Lens - Sony E - Neutral Flare

Name: SIRUI 40mm T1.8 1.33X S35 AF Lens - Sony E - Neutral Flare
Brand: Sirui
SKU: alnslud4ma
Availability: InStock

The SIRUI 40mm T1.8 1.33X S35 Autofocus Anamorphic Lens delivers cinematic quality in a compact, l...

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Sirui 40Mm T1.8 1.33X Anamorphic Lens, S35 Autofocus Lens For L Mount Cameras, Dc-S5/S5m2, Dc-S1/S1h/S1r, Dc-S9, Sl1, Cl, Fp, Fpl ( Flare) Blue 6952060077598

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OnBuy.comSirui 40Mm T1.8 1.33X Anamorphic Lens, S35 Autofocus Lens For L Mount Cameras, Dc-S5/S5m2, Dc-S1/S1h/S1r, Dc-S9, Sl1, Cl, Fp, Fpl ( Flare) Blue 6952060077598

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£735.14

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Wex Photo VideoSirui 40mm T1.8 1.33X S35 Autofocus Anamorphic Lens

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Product Information

Full details

The SIRUI 40mm T1.8 1.33X S35 Autofocus Anamorphic Lens is designed for filmmakers seeking a professional, cinematic widescreen look with the convenience of autofocus. Its key benefit is achieving a 2.35:1 aspect ratio with minimal distortion and excellent low-light performance thanks to its fast T1.8 aperture and advanced optics. A potential caveat is the specialized nature of anamorphic lenses, which may require a learning curve for optimal use compared to standard spherical lenses.

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Brand	Sirui

Extended Product Information

FAQs

What is the difference between the Neutral Flare and Blue Flare versions?

The Neutral Flare version produces cleaner, less prominent flares with minimal color, suitable for a classic cinematic look. The Blue Flare version intentionally creates characteristic blue, horizontal lens flares often associated with anamorphic cinematography.

How do I achieve the 2.35:1 aspect ratio?

The lens has a 1.33x squeeze factor. You will need to de-squeeze the footage in your video editing software by applying a 1.33x horizontal stretch to achieve the 2.35:1 widescreen aspect ratio from footage shot on a 16:9 sensor.

Can this lens be used for stills photography?

Yes, while optimized for video, the lens can be used for still photography. The autofocus and manual controls offer flexibility, and the unique anamorphic look can be applied to still images as well.

What does 'S35' mean in relation to this lens?

S35 (Super35) refers to the image sensor size that this lens is designed to cover. It ensures that the lens's image circle is large enough to cover the Super35 sensor without significant vignetting.

Is this lens compatible with full-frame cameras?

While designed for S35 sensors, it may cover parts of a full-frame sensor, but significant vignetting is likely, especially at wider apertures. It is recommended to use it with S35 format cameras or in crop mode on full-frame cameras.

How does the autofocus work compared to manual focus anamorphic lenses?

This lens features an STM motor for autofocus, which is a significant advantage over traditional manual focus anamorphic lenses. It allows for faster, more convenient focusing, especially when working alone or with moving subjects.

What is the purpose of the AFL button?

The AFL (Autofocus Lock) button allows you to lock the focus at a specific distance when using autofocus. This can be useful for maintaining focus on a subject or for recomposing shots without losing the set focus point.

Troubleshooting

Autofocus is slow or hunting

Ensure the camera's autofocus settings are optimized for video. Check for firmware updates for both the lens and camera body. Ensure adequate lighting conditions, as extreme low light can challenge autofocus systems.

Image appears distorted or soft

Verify that the footage is being de-squeezed correctly in post-production (using a 1.33x factor). Ensure the lens is properly seated on the camera mount. Clean the lens elements if they are dirty.

Lens is not recognized by the camera

Ensure the lens is fully seated on the mount. Check for camera firmware updates. If the issue persists, try updating the lens firmware via USB-C.

Aperture clicks are distracting during video

Use the de-click switch on the lens to enable smooth, stepless aperture adjustments. Avoid changing aperture rapidly during recording.

Pros and Cons

Pros

Achieves a professional 2.35:1 widescreen cinematic look.
Fast T1.8 aperture excels in low-light conditions.
Autofocus simplifies shooting, especially for dynamic scenes.
Compact and lightweight design enhances portability and usability on rigs.
Minimizes distortion and chromatic aberration for image quality.
Offers both manual and autofocus for creative flexibility.

Cons

Anamorphic lenses require specific de-squeezing in post-production.
May have a learning curve for users new to anamorphic shooting.
Bokeh shape can be hexagonal/oval, which might not suit all aesthetic preferences.
Autofocus performance can vary depending on camera body and lighting conditions.

Setup, Compatibility & Care

Compatibility: This lens is designed for Super35 (S35) cameras and is available in native mounts for Sony E, Fujifilm X, Canon RF, Nikon Z, and Micro Four Thirds (MFT). Ensure your camera body's mount matches the lens variant you select. The lens features electronic contacts for EXIF data transfer.

Filter & Matte Box: It has a 77mm filter thread and an 80mm outer front diameter, making it compatible with most standard matte boxes and filters.

Firmware Updates: Firmware can be updated via a USB-C port, allowing for potential future improvements or compatibility enhancements.

Shooting Modes: The lens includes an AF/MF switch for easy mode changes and a click/de-click aperture switch for smooth aperture adjustments during video recording. An AFL (Autofocus Lock) button is also present for controlling focus.

Care Instructions:

Keep the lens clean by using a lens brush to remove dust and a microfiber cloth for smudges.
Avoid touching the lens elements directly.
Store the lens in its protective case when not in use to protect it from dust and damage.
Use a lens hood or matte box to minimize lens flare and protect the front element.