Patent application 20120069440 is for the upcoming Nikkor AF-S 28mm f/1.8G full frame lens. I have no exact announcement date yet, but I believe this lens will be introduced in 2012. The patent contains several different calculations and one of them is for 28mm f/1.8: f = 28.08 (focal length) FNO = 1.84 (aperture) 2ω = 76.4° (filed of view) Y = 21.6 […]
