Canon upgrades the popular 70-200mm L-series lens
Canon has today announced an upgrade to two of its most loved and well-regarded L-series lenses, with the launch of the EF 70-200mm f/4L IS II USM and EF 70-200mm f/2.8L IS III USM. The 70-200mm lens has been instrumental for professional, semi-professional and photography enthusiasts for many years.