Sirui launches compact Swift full-frame autofocus lenses

Sirui has announced two new ultra-compact autofocus prime lenses, with the Swift series comprising a 20mm f/2.4 and a 40mm f/2.2.

Designed for full-frame photographers and content creators, the new lenses prioritise portability, with both weighing around 210g. SIRUI says it has achieved the compact designs without resorting to plastic optical elements, instead using all-glass optical construction and relatively straightforward optical formulas.

Both lenses feature manual aperture rings, nine-blade circular diaphragms and STM autofocus motors. The latter are designed to provide quiet, responsive focusing for both still photography and video.

They also share a 58mm filter thread, making it easier to use the same filters across both lenses.

Two focal lengths, compact designs

The Swift 20mm f/2.4 offers a 91.5-degree diagonal field of view, making it suitable for landscapes, architecture and wider environmental shots.

Its optical construction comprises 11 elements in nine groups, with a minimum focusing distance of 20cm and maximum magnification of 0.136x.

It weighs 207g in Sony E-mount and 212g in L-mount.

The Swift 40mm f/2.2 provides a more conventional everyday perspective, with 11 elements in eight groups.

It has a minimum focusing distance of 40cm and maximum magnification of 0.14x. Weight is 210g for Sony E-mount and 215g for L-mount.

Mounts and pricing

Both lenses are available in Sony E and L-mount, with Fujifilm X-mount versions also listed on SIRUI's official store. Further mount options are planned, although Nikon Z availability has not been confirmed.

Both the Swift 20mm f/2.4 and 40mm f/2.2 are priced at US$149 each, equivalent to approximately AU$230 at current exchange rates.