www.sigma-imaging-uk.com £429/$549
The Sigma 18-50mm F2.8 DC DN | C bucks a trend. Think constant-aperture f/2.8 ‘trinity’ zooms T and you’re probably thinking chunky, heavyweight lenses. This Sigma is a more compact proposition, designed for Sony E-mount and Leica L-mount APS-C format cameras. It’s amazingly
