DxO, here we go again.
I know, that most of you simply do not care about facts, but for the rest, who are more open minded, I explain (once more).DxO Analyser is not made for the photographers. It is for the engineers and technicians.
If you think, that a sensor (and I said sensor, not camera) can be fully described with an overall score in 0-100, you are silly. That is only an advertisement stuff for people, who are not educated in this topic.
For the reasonable ones, they have well detailed protocols, and measurement methods:http://www.dxomark.com/index.php/About/In-depth-measurements/Measurementshttp://www.dxo.com/us/embedded_imaging/scientific_publications
And they have the charts
. This is the data. If you know, what to look for, DxO is a valuable source of information, which can not be compared to any other review, as this is standardized and reproducible.
But you have to understand, that this is a pixel based data (so when two sensors share the same SNR, the one with the bigger MP will give better IQ downsized to a given resolution). They try to compensate this in the scores, but score vs. charts is like photoshopped jpeg vs. RAW. The first may look better, but the second carries the more information.
I always smile, when see comments "DR tested by me". Yep, and how? Because that is the question. At DxO, we know that exactly.
But again: if you don't go for the charts, you waste your time. And ours as well, as we have to read all this "biased", "crap", "not reflecting reality" comments, which are based on the lack of knowledge.
Finally, let me have some observation on a comment, which made me writing this one:
* Rank $40,000 medium format digital backs lower than consumer APS-C DSLRs.
Medium format backs are expensive, as they are:
Big in size. In Si technology, price grows exponentially with size. That's why they even glue the sensor form many pieces some times.
They are rare. Mass production would bring prices down to it's quarter.
* Report physically unachievable values for dynamic range (i.e. >14 stops from a 14-bit ADC).
Nonlinearity? Yes, it ruins the uniform sensitivity, but it exists, whatever you do.
* Report values for dynamic range that I know to be false from both personal experience and testing. (They rank the 10D, 20D, and 7D about the same. The 7D is a good 2 stops better.)
The "about the same" is 0,7 EV difference, not to mention, that I would be interested in those tests. And we already talked about the question of resolution.
So, i tried once more, I promise this was my last attempt on this forum, unless asked...