Sigma 18-50mm F2.8 DC DN: hands-on with the lens that wants to replace your kit zoom

Introduction The Sigma 18-50mm F2.8 DC DN | C is the latest addition to Sigma's 'Contemporary' range of affordable lenses. The 'DN' in the name stands for 'Digital Native' and denotes that it's designed for mirrorless cameras while the 'DC' indicates that it covers and APS-C sensor. The 18-50mm focal length range is equivalent to 27-75mm in full-frame terms, making it a useful, fast standard zoom. It will be available for the Leica/Panasonic/Sigma L mount but it's the E-mount...