is it just me perhaps,but i find my z2 tablet very bright,ive got it set on auto,.im interested in other peoples thoughts and if you find the same problem ,what were yoiur fixes,if any.cheers john
Er... simply turn off auto brightness and set it manually??
With root, you can install the Xposed module "Gravity Box", it contains an option to alter the brightness via swiping along the status bar (like on Galaxy phones).
Even on the lowest manual brightness it's rather bright. Brighter than many other tablets and because of it not as comfortable to use at night.