Here we are comparing two cameras with different body types: Olympus E-M10 IV, which was introduced in August 2020 is a Entry-Level Mirrorless camera with a 20.0MP Four Thirds sensor whereas Nikon D4, which was introduced in January 2012 is a Pro DSLR camera with a 16.0MP Full frame sensor. As you can see, D4 is 8 years older than E-M10 IV. Let's see if this age difference between two cameras makes a big difference.
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.
Here is a brief look at the main features of Olympus E-M10 IV and Nikon D4 before getting into our more detailed comparison.
Let's read on the following sections in order to better understand in detail how Olympus E-M10 IV and Nikon D4 compares and hopefully end up with enough arguments to decide which one is better for you.