SIRUI 40mm T1.8 1.33X S35 Autofocus Anamorphic Lens for Fujifilm X - Neutral Flare

Autofocus on an anamorphic lens, like the SIRUI 40mm T1.8, simplifies the shooting process considerably. It allows filmmakers, especially solo operators or those in fast-paced documentary/event shooting, to capture sharp images without needing a dedicated focus puller, making 'run-and-gun' style anamorphic filmmaking more accessible and efficient.

The 1.33x squeeze factor of this lens, when paired with a 16:9 sensor or recording format, naturally yields a 2.35:1 final image aspect ratio after de-squeezing in post-production software. You may need to adjust your monitor's aspect ratio settings or use specific anamorphic de-squeeze tools in your editing software to view the correct aspect ratio while editing.

Yes, the SIRUI 40mm T1.8 is designed for hybrid use. It features an advanced autofocus system suitable for video and stills, an AF/MF switch, and a de-clickable aperture ring, offering flexibility for both photography and videography.

The blue flare version produces distinct horizontal blue streaks when light sources hit the lens at an angle, often associated with sci-fi or modern cinematic looks. The neutral flare version provides a more subtle, less colored flare effect, suitable for a wider range of genres where a less pronounced anamorphic signature is desired.

The lens incorporates advanced optical elements, including an aspherical lens and five cylindrical lenses, specifically designed to control and minimize chromatic aberration, ensuring sharper images with accurate color reproduction.

Lens breathing refers to the slight change in field of view (zoom effect) that occurs when you adjust focus. This lens is designed to minimize breathing, which is crucial for professional video production as it allows for smooth focus pulls without distracting shifts in the image composition.

The lens features a standard 77mm filter thread on the front, allowing you to attach standard screw-in filters. It also has an 80mm outer front diameter, which is common for professional cine lenses and compatible with most matte boxes.

Ensure the AF/MF switch on the lens is set to 'AF'. Check that your camera's autofocus settings are optimized for video or stills as needed. Update lens firmware if available. Clean the lens contacts.

Verify that the lens is correctly mounted. Check for any smudges or debris on the front or rear elements and clean them carefully. Ensure focus is achieved accurately, especially with the anamorphic format.

Confirm the aperture ring is fully set to either 'Click' or 'De-click' mode. If the de-click mechanism feels stiff, avoid forcing it; inspect for obstructions or contact customer support.

Ensure the electronic contacts on the lens and camera mount are clean and unobstructed. Verify that the camera is set to record EXIF data. Update lens firmware.