SIRUI Aurora 15mm F1.6 and 24mm F1.4 Launched – Fast Full-Frame Autofocus Primes for Sony E and L-Mount

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by Nino LeitnerToday

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SIRUI has officially launched the Aurora 15mm F1.6 and 24mm F1.4, two fast full-frame autofocus primes that take its Aurora series to the wide end. Both lenses use an STM autofocus motor that works with the camera’s eye detection and subject tracking, an 11-blade aperture with a switchable click/de-click ring, an iris lock, a programmable Fn button, a USB-C port for firmware updates and a dust- and splash-resistant all-metal body. The Sony E and L-Mount versions are available for pre-order now, and Nikon Z and FUJIFILM X versions follow in Q1 2027.

We saw pre-production samples of both lenses at SIRUI’s booth in Amsterdam and reported on them in our IBC 2026 first look. Back then, SIRUI’s Sonny Liu spoke of a price of $500 to $600 per lens and of availability “in the next couple of months.” SIRUI kept that promise quite precisely: the final prices sit at the two ends of that range, and the launch came less than two months after the show.

The Aurora series started in October 2024 with the 85mm F1.4, which Johnnie reviewed on the Sony a1 II. The 35mm F1.4 followed in September 2025. With the two new wides, the series now has four focal lengths from 15mm to 85mm. L-Mount is a launch mount this time because SIRUI joined the L-Mount Alliance in March 2025.

Aurora 15mm F1.6: wide and fast

The 15mm F1.6 is the more unusual of the two lenses. Its optical design has 17 elements in 12 groups, with three aspherical, three ED and three HRI (high refractive index) elements. On a full-frame sensor, it covers a diagonal angle of view of 109.3°. SIRUI states that optical distortion is controlled to approximately 1.4%. The company does not say how much of this comes from the optics and how much from in-camera correction, so this is a figure I want to see in a test before I trust it for architecture work.

SIRUI markets the F1.6 aperture against the F1.8 that many fast ultra-wides use, with about 27% more light in theory. That is one-third of a stop. It is not a large difference, but the lens is also wider than the many 16mm F1.8 options, such as the Viltrox AF 16mm F1.8 for L-Mount. For astrophotography, night exteriors and dark interiors, every bit of light helps.

For video shooters, the most practical detail is the 77mm (M77x0.75) front filter thread. Many ultra-wides at this focal length have a bulbous front element and need a filter holder system, so a standard screw-in ND or polarizer is a real advantage on a gimbal. The minimum focus distance is 0.3m (0.98ft), with a maximum magnification of 0.08x. The lens has a maximum diameter of 82mm (3.23in). The Sony E version is 106.4mm (4.19in) long and weighs 542g (1.19lb); the L-Mount version is 104.4mm (4.11in) long and weighs 550g (1.21lb).

Aurora 24mm F1.4: the classic wide

The 24mm F1.4 uses 14 elements in 11 groups, with three aspherical, four ED and three HRI elements. The diagonal angle of view is 82.93°. The minimum focus distance is 0.26m (0.85ft), and the maximum magnification of 0.15x (1:6.67) is useful for close details and product shots.

The 24mm takes 62mm (M62x0.75) filters and has a maximum diameter of 76mm (2.99in). It is not a small lens for a 24mm F1.4: the Sony E version is 106.6mm (4.20in) long and weighs 550g (1.21lb), and the L-Mount version is 104.6mm (4.12in) long and weighs 560g (1.23lb). The two new lenses are almost the same length. My feeling is that SIRUI did this on purpose, so that you can swap them on a gimbal without a full rebalance, but that’s just my guess.

The price is interesting. At $499, the 24mm F1.4 costs less than the Aurora 35mm F1.4, which SIRUI sells for $549 in its own store.

Same controls across the series

Both lenses have the same set of controls as the 35mm and 85mm. There is an AF/MF switch, a click on/off switch for the aperture ring, an iris lock that holds the ring in the A position or in the manual aperture range, and an Fn button that is set to AF lock by default and can be assigned to other functions. A USB-C port on the barrel is for firmware updates. Both lenses have an all-metal build with dust-, stain- and splash-resistant protection, and each comes with a lens hood.

According to SIRUI, the STM motor gives fast, accurate and quiet autofocus, and both lenses have low focus breathing. We have not tested this yet. SIRUI also publishes a Sony camera compatibility list: most current bodies are compatible in photo and video mode, but the a6000, for example, is only partially compatible in video mode. Check the list before you order for an older body.

SIRUI gives a three-year replacement warranty on both lenses: within three years of purchase, a lens with a failure that does not come from misuse is replaced free of charge. In the box, you get the lens, a lens pouch, the hood, and front and rear caps.

What about Nikon Z and FUJIFILM X?

The Aurora 35mm and 85mm are already available in Nikon Z and FUJIFILM X mount, and SIRUI says that both new lenses follow in these two mounts in Q1 2027. On an APS-C body with a 1.5x crop, the 15mm gives a field of view similar to a 23mm lens on full frame, and the 24mm one similar to a 36mm lens. (And while you are at it, SIRUI, a matching 50mm would make this a complete set.)

Price and availability

The SIRUI Aurora 15mm F1.6 costs $599 and the Aurora 24mm F1.4 costs $499. In Europe, SIRUI lists the lenses at €649 and €539, including VAT. Both are available for pre-order now in Sony E and L-Mount from retailers and from SIRUI’s store (15mm F1.6, 24mm F1.4). The Nikon Z and FUJIFILM X versions are scheduled for Q1 2027.

Do you already shoot with the Aurora 35mm or 85mm, and will the 15mm or 24mm fill a gap in your kit? Or is a fast ultra-wide with a front filter thread more important to you than autofocus? Let me know what you think in the comments below!