SIRUI Aurora 35mm F1.4 Full-Frame Autofocus Lens - Nikon Z

Yes, the f1.4 aperture is excellent for capturing stars and the night sky in low-light conditions. The advanced optical elements help minimize aberrations common in wide-aperture lenses.

The FN button can be customized to perform various functions (e.g., AF Mode, Metering Mode). The IRIS_LOCK button is specifically designed to lock the aperture ring, preventing accidental changes during shooting, which is particularly useful for video.

No, this lens is exclusively for Nikon Z-mount mirrorless cameras. It will not mount or function on older Nikon F-mount DSLR cameras without an appropriate adapter, and even then, autofocus and electronic communication may not be supported.

The lens's STM motor supports precise autofocus and works with your camera's subject tracking features, including Eye-AF, for sharp focus on moving subjects. Performance will also depend on the camera body's tracking capabilities.

The lens features a 62mm filter thread, which is a common size for many photographic filters.

The minimum focusing distance is approximately 0.25m (0.82 ft), allowing for relatively close focusing for detail shots.

Ensure your camera's firmware is up to date. Try cleaning the electronic contacts on both the lens and camera mount. Check if the AF/MF switch on the lens is set to 'AF'. In challenging light, AF performance may be reduced; try focusing on higher contrast areas.

Ensure no debris is present on the mounting surfaces of the lens or camera. Verify that you are using the correct mount version (Nikon Z). Make sure the camera is powered off before attempting to mount the lens.

Confirm the lens is properly focused on the intended subject. Ensure the aperture is not too wide open (f1.4) if maximum sharpness across the frame is critical; stopping down slightly (e.g., to f2.8 or f4) can improve edge-to-edge sharpness. Check for dust or smudges on the lens elements.

While the lens is designed for minimal focus breathing, some may still be present, especially with large focus pulls. Utilize smooth, controlled focus adjustments. For critical video work, consider manual focus if breathing is a concern.