Patent: Canon RF 70-200mm f/2-2.8L IS USM DS and other fast DS zoom lens designs

Over the years I’ve seen some crazy designs patented by Canon and applications like this one are fun to read. I mean, here’s a patent application where someone was told. “Go nuts, see what you can do”. Let’s make no mistake the lenses described here would be big, heavy, and frighteningly expensive but we are here for that.