Here we are comparing two cameras with different body types: Sony A6400, which was introduced in January 2019 is a Semi-Pro Mirrorless camera with a 24.0MP APS-C sensor whereas Nikon D750, which was introduced in September 2014 is a Semi-Pro DSLR camera with a 24.0MP 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. Fortunately, you can't go wrong with any of these cameras as we rank them amongst Top 10 cameras in their classes. Sony A6400 is ranked #5
out of 44 Semi-Pro Mirrorless cameras with an overall score of 81 whereas Nikon D750 is ranked #4
out of 90 Semi-Pro DSLR cameras with an overall score of 89.
Let's have a brief look at the main features of Sony A6400 and Nikon D750 before getting into our more detailed comparison.