Three of the lenses are designed for use on micro four thirds or Sony E-mount cameras: a 30mm f/2.8 DN, 19mm f/2.8 DN and 60mm f/2.8 DN.

Sigma explains that the 60mm, for example, will deliver the 35mm equivalent of a 120mm lens on a micro four thirds camera, and 90mm on an E-mount body.

The fourth lens, a 30mm f/1.4 DC HSM is aimed at users of APS-C format DSLRs.

UK availability and prices have yet to be announced.

Sigma is expected to reveal two more lenses at the Asia Imaging Fair in Beijing, China from 1-3 April.