Sirui Extends Aurora Line With 15mm and 24mm Primes

Sirui has announced two fast full-frame mirrorless primes: the Aurora 15mm f/1.6 at $599 and the Aurora 24mm f/1.4 at $499. Both combine autofocus with video-oriented controls, and Sirui positions them for architecture, travel, vlogging, night photography and environmental portraits. The company says both provide dependable autofocus and high image quality across still and moving-image assignments.

What does the 15mm f/1.6 change?

At 15mm, the Aurora f/1.6 provides an ultra-wide field of view, and Sirui says its straight-line retention is very low. The company designates it for architecture, travel, vlogging and night shooting; the fixed f/1.6 aperture should also widen the available combinations of shutter speed and ISO.

Distortion control was a central design concern because ultra-wide lenses often bow straight lines near the frame edges. Sirui calls the Aurora “particularly valuable for architecture and interior photography, as well as video production, where reducing distortion can also mean less correction and cropping in post-production.”

• Optical formula: 17 elements in 12 groups, including three aspherical, three ED and four HRI elements.
• Aperture: An 11-bladed diaphragm and a dedicated aperture ring that de-clicks for smoother video operation.
• Front thread: Standard 77 mm filters, preserving a conventional size unlike some ultra-wide lenses.
• Size and focus: 106.4 mm (just under 4.2 inches) long, 540 g (19 oz), 0.3 m (0.98 ft) minimum focus and 1:12.5 maximum magnification.

For architecture and interiors, controlled edge distortion can reduce correction and cropping; for travel and night work, f/1.6 gives direct control over shutter speed and ISO. The announcement gives no measured distortion data, so those benefits remain Sirui claims awaiting independent evaluation.

How does the 24mm f/1.4 widen the Aurora range?

The 24mm covers many of the 15mm’s uses—architecture, travel, vlogging and night shooting—but adds environmental portraits and a more natural perspective. Sirui compares it with the existing Aurora 35mm f/1.4 and says: “Its 24mm focal length provides a wider view than a traditional 35mm lens without the exaggerated perspective often associated with ultra-wide lenses.”

Both primes use an STM autofocus system, which Sirui says focuses quickly and quietly, and both support eye-tracking and subject-detection modes. Both aperture rings de-click; the 24mm adds stepless aperture control and minimized focus breathing for video.

• Optical formula: 14 elements in 11 groups, including three aspherical, four ED and three HRI elements.
• Aperture and video: An 11-bladed diaphragm, de-clicked aperture ring, stepless aperture control and minimized focus breathing.
• Size and filters: 106.6 mm (4.2 inches) long, 550 g (19.4 oz), with 62 mm front filters.

Where do the primes sit against current alternatives?

Sirui positions the $499 Aurora 24mm f/1.4 as the least expensive option in its 24mm comparison set:

• Sirui Aurora 24mm f/1.4 — $499
• Meike AF 24mm f/1.4 — $589, a Chinese-made competitor
• Sigma 24mm f/1.4 DG DN Art — $879
• Sony FE 24mm f/1.4 GM — $1,498

At 15mm f/1.6, Sirui claims its Aurora is the only lens with that exact focal-length and aperture pairing. Its market comparison shifts to 16mm and 14mm alternatives with different focal lengths or maximum apertures:

• Sirui Aurora 15mm f/1.6 — $599
• Sony FE 16mm f/1.8 G — $898
• Viltrox AF 16mm f/1.8 — $580
• Sony FE 14mm f/1.8 GM — $1,598
• Sigma 14mm f/1.4 DG Art — $1,839

Which mounts arrive first?

Both lenses have weather-resistant designs and are listed for four mounts: Sony E, Nikon Z, Leica L and Fujifilm X.

• Available now: Sony E and Leica L versions
• Slated for Q1 2027: Nikon Z and Fujifilm X versions

Practitioners can assess the E- and L-mount versions now, while the Z and X versions remain scheduled for Q1 2027. The next firm release point is that Q1 2027 window; measured distortion, autofocus and video behaviour will determine how far the published specifications translate into dependable results.