NiSi Athena 25mm T1.9 Cine Lens - PL Mount

The T1.9 aperture allows for superior performance in low-light conditions and creates a shallow depth of field, enabling beautiful background blur (bokeh) to isolate your subject.

Focus breathing is the change in the lens's field of view when adjusting focus. Minimizing this effect means the image framing remains consistent during focus pulls, which is essential for professional cinematic shots.

Yes, the lens features a 77mm filter thread on the front for standard screw-on filters, and also includes a rear filter mount for additional flexibility.

The Athena series lenses are designed to be matched in weight, size, and form factor, with consistent placement of focus and aperture rings. This standardization facilitates quick lens changes on set, especially when using gimbals or stabilizers.

This lens features a PL mount, which is a standard mount used on many professional cinema cameras.

Gently blow off dust with a blower brush, then wipe with a clean microfiber lens cloth. For smudges, use a specialized lens cleaning solution applied sparingly to the cloth, not directly on the lens.

The focus ring offers a 300-degree rotation, providing ample throw for precise manual focus control and accurate focus pulls, further aided by fluorescent focal scales.

Ensure the PL mount on your camera or adapter is clean and free of debris. Align the mounting indicators precisely and rotate firmly until it locks.

Double-check that the focus ring is set correctly for your desired distance. Ensure the aperture is set appropriately; very wide apertures (like T1.9) have a shallower depth of field. Confirm the lens is properly seated on the camera mount.

These rings should move smoothly. If stiff, avoid forcing them. Inspect for any obstructions. Contact customer support if the issue persists, as this may indicate a mechanical problem.

While the lens is designed to minimize focus breathing, some minimal breathing may still occur. Ensure you are using the 300-degree focus throw with smooth adjustments. If breathing is excessive, ensure the lens is functioning mechanically as expected.