Sony NEX-6 preview extended: high ISO comparisons dissapoint

DXO measures exposure relative to the saturation point, not visible exposures. Meaning, two cameras can show up to a stop difference in DXO measurements, yet still show the exact same visual exposure at the same physical exposure settings and with the same light source. Or vice versa. What DXO calls measured ISO, does not fit any of the existing ISO standards for image output.

Fact is that not only studio stamples hint at the OM-D "overstating" ISO's (based on visual exposures rather than an unfinished product), Dpreview also measured it. Again based on image output, rather than RAW data without taking "second stage" digital amplification into account, the part where an image is formed with curves and profiles.