....In the case of lenses, they are reporting resolution as a peak measurement - the highest resolution measured at any location in the lens' FoV, at any aperture setting, and for zooms at any point in the focal range. Maybe the lens is crap wide open and crap through most of the zoom range - DxOMark's resolution score doesn't care....
So they measure the wrong thing then. Any chinese $50 lens maker can make a lens that has spectacular resolution at *one* point in the field and at *one* aperture setting. Silly DxOMark.
....the real problem with the DxOMark scoring ....they make it far too easy for human nature to pounce on that number and say, "This one is the best."
To sum up, IMO, DxO's Measurements are valid and useful, their Scores are meaningless, and the inappropriate interpretation that many forum posters apply to their conflated scores is reprehensible.
Nah sorry, if they publish data that is inconsistent with human nature, then I don't know what species they think they are talking to!
And I wouldn't blame forum posters for 'inappropriate interpretation' in this case. If DxOMark publish a number called 'resolution score' which makes good lenses look bad and bad lenses look good, then I will accuse them of 'mischievous obfuscation'! And that's being kind; I could have accused them of deliberate deception and spectacularly incompetent data presentation.