Here we are comparing two Sony cameras cameras with different body types: Sony RX1, which was introduced in February 2013 is a Large Sensor Compact camera with a 24.0MP Full frame sensor whereas Sony A9, which was introduced in April 2017 is a Pro Mirrorless camera with a 24.0MP Full frame sensor.
Comparing an interchangeble lens camera to a fixed lens camera is a bit tricky but we will do our best to make this a fair comparison. Fortunately, you can't go wrong with any of these cameras as we rank them amongst Top 10 cameras in their classes. Sony RX1 is ranked #9
out of 57 Large Sensor Compact cameras with an overall score of 73 whereas Sony A9 is ranked #8
out of 39 Pro Mirrorless cameras with an overall score of 93.
Let's have a brief look at the main features of Sony RX1 and Sony A9 before getting into our more detailed comparison.