Here we are comparing two Sony cameras cameras with different body types: Sony A7R III, which was introduced in October 2017 is a Pro Mirrorless camera with a 42.0MP Full frame sensor whereas Sony A99 II, which was introduced in September 2016 is a Semi-Pro DSLR camera with a 42.0MP Full frame sensor. There is 13 months difference between A7R III and A99 II so we don't expect to see a huge technology difference between these two cameras but it would still give an advantage to younger A7R III, especially in sensor tech.
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 A7R III is ranked #3
out of 43 Pro Mirrorless cameras with an overall score of 97 whereas Sony A99 II is ranked #2
out of 92 Semi-Pro DSLR cameras with an overall score of 90.
Let's have a brief look at the main features of Sony A7R III and Sony A99 II before getting into our more detailed comparison.
Let's read on the following sections in order to better understand in detail how Sony A7R III and Sony A99 II compares and hopefully end up with enough arguments to decide which one is better for you.