The Canon 1D X Mark III may be the last of its kind, but it won’t go down without a fight. Information has leaked regarding the Canon flagship camera, predicting a 2020 release. This follows on the heels of Nikon’s D6 announcement and its claim that the D6 will be Nikon’s “most advanced DSLR to date.” The Canon 1D X series and the Nikon D6 series have been longtime competitors, aimed at professional photographers in need of rugged, high-performing camera…