As with all the other manufacturers, the pride and joy and “flagship” lenses of a lens manufacturer are its supertelephotos.  Say what you will about the Nikon 14-24mm f/2.8 or Canon’s 50mm f/1.2 – when it comes down to it, it’s the 300 f/2.8 IS’s or 400 f/2.8 VR’s of the world (or maybe the [...]