Thanks for your feedback, it is very important because it enable us to improve/check our measurements.
In this specific case, we did many test on different samples to check our results.
About focusing micro adjustment, the DxOMark protocol is made to avoid such trouble: For each couple focal-aperture measured, we perform what we call a “through focus”: We shot around 40 pictures with short move on an optical rail between each picture.
We measure sharpness on each picture and we performed all measurement on the best one. This best one correspond to the best focusing position.
The DxOMark team