SIRUI Nightwalker Series Cine Lens Bundle - E Mount

The T1.2 aperture allows significantly more light to reach the sensor, enabling shooting in very low light conditions without a substantial increase in ISO, resulting in cleaner, less noisy footage and a shallow depth of field for subject isolation.

These lenses are designed for Super35/APS-C sensors. While they can be mounted on full-frame E-mount cameras, they will only cover the central Super35/APS-C portion of the sensor, resulting in a cropped image.

All lenses in the set feature identical gear positions for focus and aperture control. This means that accessories like follow focus systems or wireless motors do not need to be repositioned when changing lenses, saving time on set.

Focus breathing is the change in focal length (and thus field of view) that occurs when you adjust focus. The Night Walker lenses are engineered with optics that minimize this effect, providing a more stable image during focus transitions, crucial for cinematic shots.

Yes, all lenses in the series feature a unified 67mm filter thread, making it easy to attach standard filters like ND or diffusion filters without needing different sizes for each lens.

An f-stop (f/) is a theoretical measurement of aperture, while a T-stop (T/) measures the actual amount of light transmitted through the lens. T-stops are more accurate for cinematography as they account for light loss within the lens elements, leading to more consistent exposure.

The lenses are constructed with a robust aluminum alloy, providing durability and protecting the internal optical elements while maintaining a relatively lightweight profile.

Ensure the lens mount and camera mount surfaces are clean and free of debris. Align the mounting marks correctly and rotate the lens firmly until it clicks.

Manually confirm focus using the focus ring and your camera's focus aids (e.g., focus peaking, magnification). Ensure the lens is set to the desired aperture and that the subject is within the depth of field.

Ensure you are using the T1.2 aperture setting. Check that your camera's ISO is set appropriately for the low-light conditions and that there are no obstructions causing vignetting.

While minimized, some breathing may still occur. Practice smooth focus pulls and consider techniques like using a remote follow focus system for maximum control.