Hi Joaco,
Yes i know

i had the same problems, with my Nikon D300s and Nikkor af-s 70-300mm lens...
My halos disapeard, as i set my camera to factorysettings...
Please make sure, that you used the resetbutton in the menu "records" (if you have this menu)
and second one, use the resetbutton in the menu "individuall-functionallity"....
I also turned off "Active D-lighting"..
But i think that my problem was on the converting of my camera...
At this point, i have many settings like sharping, kontrast, brightness etc..
Maybe theres one setting which one is the reason for your halos...
Try only ISO 200.. Some other guys said theres almost no big difference between it..
Best regards
Benni