Dealer listings have surfaced four unreleased Sirui full-frame primes — the Aurora 15mm f1.6 and 24mm f1.4 at roughly $535–$538 each, plus the compact Swift 20mm f2.4 and 40mm f2.2 — for Sony E, Nikon Z, L-mount and Fujifilm X bodies. Sirui has not confirmed a launch date, and the two Swift optics carry no pricing yet.

Japanese site Asobinet first compiled the dealer-leaked specifications. Treat everything below as pre-announcement data, not shipped-product fact: no review units have gone out, and Sirui's own pages remain silent.

What do the specs actually say?

Shared features across all four lenses, per the listings:

• STM autofocus motors
• On-barrel aperture rings
• Fn button and AF/MF switch
• Anti-fouling coating, dust and splash resistance
• No optical image stabilization

Aurora 15mm f1.6 (~$535–$538): 17 elements in 12 groups, 11-bladed aperture, 77mm filter thread, 0.3m close focus, 0.08x maximum magnification, 82mm diameter, 540g.

Aurora 24mm f1.4 (same price range): 14 elements in 11 groups, 11-bladed aperture, 62mm filters, 0.26m close focus, 0.15x magnification, 76mm x 106.6mm, 550g.

Swift 20mm f2.4 (no price): 69.4mm x 58mm and just 205g — the lightest of the set — with a 9-blade aperture, 58mm filter thread and 0.25m minimum focus.

Swift 40mm f2.2 (no price): 11 elements in 8 groups, 9-blade aperture, 58mm filters, 0.4m close focus at 0.14x, 62mm x 69.4mm.

Who is the target buyer?

The 15mm and 20mm focal lengths, paired with fast apertures and low weight, point squarely at astrophotography and landscape work. The 77mm thread on the 15mm Aurora matches standard screw-in filter systems landscape shooters already own. The 24mm f1.4 serves low-light, event and architecture photographers, with autofocus fast enough for street work.

Fujifilm X-mount users get different effective fields of view: 22.5mm, 36mm, 30mm and 60mm equivalents from the four designs. That crop-factor math matters for anyone budgeting a kit across systems.

One caveat for value shoppers: TTArtisans already sells full-frame primes below $500, so the Aurora pricing sits above the cheapest third-party competition. The question is whether Sirui's build and rendering justify the gap.

Does Sirui's track record support the price?

The Phoblographer's testing of the existing Aurora 85mm f1.4 found weather sealing, fast autofocus and a distinctive rendering style. Their review noted: "Those 15 aperture blades really are no joke. The bokeh is super smooth and more importantly, it's got some onion shapes to it." Onion bokeh divides opinion, but the outlet's position was blunt: "no one ever really complained about onion bokeh except for some industry plant in DPReview's forums or Reddit."

That rendering character — and the 11-blade apertures on both Aurora primes — suggests Sirui is again chasing a classic look rather than clinical sharpness. Working photographers who bill clients for finished aesthetic, not lab charts, may find that trade acceptable at $535.

What happens next?

Nothing ships until Sirui confirms pricing for the Swift pair and sets a release date. Until official announcement, dealer listings can change — specs, prices and even mount availability remain, in the source's words, up in the air. Watch for Sirui's formal launch to verify whether the leaked numbers hold.