DXO mark means nothing. They take their objective tests and interpret them in completely subjective ways, all (as it would seem) on Nikon's dime. Super biased, all rubbish, especially their ISO scores. Canon should be top of the mark for every camera they've put out in the ISO division, right next to Pentax, and Nikon and Sony should be right in the bin every time. But it's absolutely the opposite. If you've ever seen the DPReview studio comparison tool, I highly recommend cranking up the ISO on there and seeing for yourself what I'm talking about. D5200? Rubbish. D800? Rubbish at anything above or below ISO 200. 5DIII? A f@ck!ng mint. DXO scores the opposite in every case.
DXO meassure signal /noise
if you do not understand the simplest things of physics I suggest that you study the subject before writing statements as yours.
No, I get it. That's why I know it's garbage.
The proof is in the pudding. I get to test and review a lot of cameras. I sold cameras for a living before starting my studio. My assistant's got a good set of cameras and I as well. I've seen these things work in real-world situations, in studio situations, and I've edited the raw files. Giving the D5200 a gracious F+ would be an exaggeration, but it actually scored better than the 1DX according to DXO. Bullsh¡t. Straight up. I know I mentioned it before, but the DPReview studio comparison tool is the quickest way to see a rough example for yourself. The D800 scoring better than the Phase IQ180? Steaming triple-coiler of bullsh¡t. If you've ever tried these two cameras — and I mean a full shoot and tried to print a 5'x8' or even 20"x30" poster from these two cameras — you'll see what I'm talking about. The out-of-camera quality, DR and colour depth of even seven-year-old medium format backs kick the junk out of the D800 HANDS DOWN. You can't beat the 5DIII and Pentax K-5II for noise and usability at high ISO. There's just no way. But the APS-C K-5II scored higher than the 5DIII, and the 5DIII scored only as high as the D3100. Bullsh¡t. Every Nikon crop camera from the last two years just dies at or after ISO 400. DXOmark is thoroughly rubbish, right down to their bias-blackened subjective hearts.
I have to agree with ankorwatt.
From your comment, it's clear you have no idea what you're talking about. You're mixing apples and oranges and complaining that they don't taste like kiwi. All based on you lording your own personal experience taking for granted that somehow you know better than anyone else.
Obviously. I have very little experience with cameras.