We sat down this week with Toshiaki Akagi, an engineer and senior manager at Nikon in Japan, as well as a key figure in the development of the company’s newest flagship digital SLR, the D4. In an hour-long chat at the 2012 International CES trade show in Las Vegas, Akagi, whose title is General Manager, 1st Designing Department, Development Headquarters, Imaging Company, answered our questions about D4 autofocus, image quality and more.