SIRUI IronStar 35mm T1.9 1.5x Cine Lens - PL/EF mount, Blue Flare

The 1.5x anamorphic squeeze allows you to capture a wider aspect ratio (2.39:1) on a standard full-frame sensor, providing a more expansive and cinematic field of view with characteristic oval bokeh and horizontal flares.

Yes, this lens is designed to produce flares. This specific model (Blue Flare) will produce horizontal blue flares when light sources are near the edge of the frame or directly in front of the lens.

Focus breathing is the effect where the lens's field of view changes slightly as you adjust focus. This lens features minimized focus breathing, which is important for professional video work as it allows for smoother focus pulls without a noticeable change in the image's width.

Yes, you can use this lens on a Super 35 camera. However, you will achieve a different aspect ratio and field of view compared to using it on a full-frame camera, as it will not cover the entire sensor.

The lens typically comes with both a native PL mount and a user-interchangeable EF mount, ready for diverse camera setups.

The fast T1.9 aperture allows for shooting in low-light conditions with less noise and provides a shallow depth of field, enabling you to isolate your subject from the background for a more professional and visually appealing image.

The lens features a 95mm front diameter for compatibility with most cine-style matte boxes and accessories. It also has standard 0.8 MOD focus and iris gears for seamless integration with follow-focus systems.

Ensure you are using the correct mount (PL or EF) for your camera. Verify that no obstructions are present on the camera mount or lens mount. For EF mount, ensure the lens is aligned correctly with the camera's mount indicators and rotated firmly into place.

Check that the lens is properly seated on the camera. Ensure the focus is set correctly for the scene. Clean the lens elements with a microfiber cloth if they appear dirty. Verify the camera's sensor is clean.

This lens is designed for full-frame coverage. Vignetting may occur if used on crop-sensor cameras or if certain camera settings (like over-scanning) are not adjusted. Ensure your camera's settings are appropriate for the lens's full-frame coverage.

While minimized, some focus breathing is inherent in anamorphic lenses. For critical shots, practice slow, deliberate focus pulls. Using a robust follow-focus system can help achieve smoother transitions. Ensure the back focus is correctly set.