SIRUI IronStar 60mm T1.9 1.5x Cine Lens (PL/EF mount, Neutral Flare)

A 1.5x anamorphic lens allows you to capture a wider field of view and a cinematic widescreen aspect ratio (like 2.39:1) on standard camera sensors (like full-frame) by vertically squeezing the image. This provides the characteristic oval bokeh and horizontal lens flares associated with anamorphic cinematography, with less distortion than higher squeeze factors.

You will need to de-squeeze the image in post-production or during monitoring. The resulting aspect ratio depends on your camera's native sensor format. For instance, a 1.5x squeeze on a full-frame camera shooting in 3:2 mode will result in a 2.25:1 aspect ratio, and in 16:9 mode, it yields approximately 2.66:1. Standard de-squeeze ratios for monitoring and editing should be applied.

Yes, if your mirrorless camera has an EF mount, you can use the interchangeable EF mount provided with the lens. Ensure your camera body is compatible with EF-mount lenses.

The 'Neutral Flare' version of the lens produces clean, natural flares when light hits the lens elements. The 'Blue Flare' version is designed to create more stylized, blue-tinted flares, offering a specific aesthetic choice for filmmakers.

The SIRUI IronStar 60mm is engineered to minimize focus breathing. While some minimal breathing may be present during very large focus adjustments, it is generally kept to a level suitable for professional cinematic use.

The fast T1.9 aperture allows the lens to gather more light, enabling shooting in low-light conditions with less need for high ISO settings. It also provides a shallower depth of field, which helps in isolating the subject from the background and creating a pleasing bokeh effect.

Yes, the lens includes a native PL mount and a user-interchangeable EF mount, providing flexibility for different camera systems.

Ensure the lens is properly mounted to the camera. Check that the focus ring is set correctly and that you are using the appropriate focus distance for your scene. Verify that the camera's sensor mode (e.g., 3:2 or 16:9) is accounted for in your aspect ratio calculations.

While this lens is engineered for minimal breathing, extreme focus pulls can still exhibit some effect. Practice smooth, deliberate focus adjustments. Ensure the lens is securely attached and the focus ring is not slipping.

Re-tighten the mount screws securely. Ensure you are using the correct screws for the mount and that the mount is properly aligned before tightening. If the issue persists, contact customer support.

Confirm the camera's recording mode and sensor aspect ratio. The 1.5x squeeze factor needs to be applied correctly. For example, a 16:9 recording will yield a wider aspect ratio than a 3:2 recording after de-squeezing. Consult your camera's manual for specific settings.