Sigma has paired its popular 150-600mm f/5-6.3 Sports and Contemporary lenses with the Sigma TC-1401 1.4X Teleconverter, offering some exciting new options for extended reach and great savings.

Sigma has launched two new Global Vision lens kits – the 150-600mm f/5-6.3 DG OS HSM | Sports + Tele Converter TC-1401 kit, and the 150-600mm f/5-6.3 DG OS HSM | Contemporary + Tele Converter TC-1401 Kit – aimed at sports and wildlife photographers that expands the 150-600mm focal range up to a staggering 210-840mm f/6.3-9.

Both available now, the 150-600mm f/5-6.3 DG OS HSM | Sports + Tele Converter TC-1401 kit has a suggested retail prices of £1649.99 and the 150-600 f/5-6.3 DG OS HSM | Contemporary + Tele Converter TC-1401 Kit sells for £1,349.99.

What’s more, Sigma has also announced a new firmware update for the Canon- and Nikon-mount versions of the 150-600mm f/5-6.3 DG OS HSM | Sports and 150-600mm f/5-6.3 DG OS HSM | Contemporary, which claims to boost the lenses’s AF speed by 50%.

The new firmware update can be installed using SIGMA Optimization Pro, the dedicated software for the SIGMA USB DOCK.