Nikon has been something of a trailblazer in super-high-resolution DSLRs, chucking a metaphorical hand grenade into the market in 2012 with the launch of the 36.3Mp Nikon D800. Since then, plenty of others have caught up, with a growing number of super-high-resolution models available, including the Sony A7R series, the Pentax K-1, and the Canon 5DS series. Launching the fourth-generation D800-ser