Sigma 135mm f/1.8 DG HSM Art
Is this the ultimate portrait lens?
With a constant f/2.8 aperture, the professional-grade Sigma 17-50mm f/2.8 EX DC OS HSM makes a great upgrade to a standard zoom kit lens.
Sigma updates its Foveon-powered compact camera.
Can Sigma's latest DSLR unlock the potential of the Foveon sensor?
With its revolutionary Foveon X3 sensor, the DP2s promises DSLR-like image quality in a compact camera
After the mixed views of the unique DP1, Sigma has introduced the DP2, but is it any better? Joanne Carter finds out.
The first compact digital camera with a DSLR-sized sensor has been widely anticipated, but how does it fare?
How does the unique Foveon X3 sensor measure up to the competition?