Introduction For over three decades Nikon users have had the option of a uniquely versatile lens. The first 200-400mm f/4 was introduced in 1983 but as a manual focus model offered to NPS members initially it failed to capture the imagination of the wider public. It was not until the lens was totally redesigned and offered as an AF model with image stabilization that the lens started to attract attention. Indeed, it was to become one of the most popular of the super-telephoto models in the firm’s line up, so much so that Canon has since