Here we are comparing two cameras with different body types: Nikon D5, which was introduced in January 2016 is a Pro DSLR camera with a 21.0MP Full frame sensor whereas Leica M-Monochrom, which was introduced in May 2012 is a Pro Mirrorless camera with a 18.0MP Full frame sensor.
Despite some fundamental differences of these two body types, Mirrorless cameras are becoming serious alternatives to DSLR cameras thanks to their size/weight advantages and recent improvements in their focus speeds , which makes this comparison even more interesting.
Let's have a brief look at the main features of Nikon D5 and Leica M-Monochrom before getting into our more detailed comparison.