Third Party Manufacturers / Re: DxOmark's latest king of the hill, dethroning the D800 by some irrelevant points« on: March 10, 2014, 02:36:07 PM »
Don't you mean this one?
Either way, it doesn't give you anything other than the general criteria for each "score", and it still doesn't explain their calculations/formula for how they determine the numerical value of the "score".
As I pointed out in another thread (from which I'll just paste the following), the article's author, Peter van den Hamer, goes on to describe some of the problems with DxO's sensor analyses, such as the low ISO bias of the sensor score (one reason I call them Biased Scores = BS), the fact that measuring color depth (i.e. chroma noise) at low ISO is basically meaningless (and yet it's a major factor in the Sensor Score), their confusing nomenclature for the subscores (e.g. Sports Score), etc.
He also takes issue with DxO's refusal to divulge the way they calculate the overall score. He has come up with an approximation which he suggests is usually to accurate to within 1-2 points: DxOMark_Sensor_Score = 59 + 4.3*(ColorDepth-21.1) + 3.4*(DynamicRange-11.3) + 4.4*log2(ISO/663) -0.2. He also states, "My guess is that the actual formula is non-linear and may use (under some conditions) coefficients of 5/5/5 rather than 4.3/3.4/4.4." His suggestion that the 'master formula' which DxO uses may be modified under some conditions further supports the claim that DxO's scoring is biased.