As promised, I have performed some additional dynamic range tests on the mirrorless cameras I am testing (Nikon 1 J2, Canon EOS-M, Sony NEX-F3, Sony NEX-5R, Sony NEX-6, Sony NEX-7 and Olympus OM-D EM-5) and I have the data ready for your viewing pleasure. As expected, the Sony APS-C sensors performed the best, with the Sony NEX-5R and NEX-6 leading the game (although other NEX series are extremely close) followed by the Olympus OM-D EM-5, then Canon EOS M and then finally the Nikon 1 J2. Here is a comparison chart that shows performance of the various mirrorless cameras:
Once again, I wanted to see how far off the cameras are from the Nikon D800/D800E, the king of dynamic range and resolution:
As you can see, the D800E stands out from the crowd, but not by a huge margin. This shows that APS-C and even smaller sensors are very capable of excellent dynamic range.
I know I will be asked on why my tests show less dynamic range overall than say DxOMark’s. Well, first of all, our testing methodology is completely different (more on that in a separate post), so the numbers will always be different. DxOMark uses its own DXO tools for measuring dynamic range, while I use Imatest with a Stepchart, taking 4 separate shots, 2 stops apart (8 total stops) in order to compute dynamic range.