Here we are comparing two 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 Pentax K-3 III, which was introduced in March 2021 is a Advanced DSLR camera with a 26.0MP APS-C sensor. There is only 5 months difference between R3 and K-3 III so we are expecting this to be a fair comparison regarding age and technology level.
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
#5 out of 75 Pro Mirrorless cameras with an overall score of 93 whereas Pentax K-3 III is ranked
#3 out of 94 Advanced DSLR cameras with an overall score of 81.
Here is a brief look at the main features of the Canon R3 and Pentax K-3 III before getting into our more detailed comparison.
Let's read on in the following sections in order to better understand in detail how the Canon R3 and Pentax K-3 III compare and hopefully end up with enough arguments to decide which one is better for you.
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