Here we are comparing two Canon cameras cameras with different body types: Canon R3, which was introduced in September 2021 is a Pro Mirrorless camera with a 24.0MP Full frame sensor whereas Canon 1D X III, which was introduced in January 2020 is a Pro DSLR camera with a 20.0MP Full frame sensor. There is 20 months difference between R3 and 1D X MIII so we don't expect to see a huge technology difference between these two cameras but it would still give an advantage to younger R3, 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. Canon R3 is ranked #4
out of 58 Pro Mirrorless cameras with an overall score of 95 whereas Canon 1D X III is ranked #2
out of 36 Pro DSLR cameras with an overall score of 81.
Here is a brief look at the main features of Canon R3 and Canon 1D X III before getting into our more detailed comparison.
Let's read on the following sections in order to better understand in detail how Canon R3 and Canon 1D X III compares and hopefully end up with enough arguments to decide which one is better for you.
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