After my review was rejected on the Sony website, I write here now, even though I did not buy the TV through Amazon. Possession of the TV said a little over a month and am honest since no longer so enthusiastic. The sound is perfect for built-in speakers, FullHD material looks great, 4k outstanding. Provided there are no dark scenes here. Because then you can see how bad the panel is illuminated. Have only once given a chance, before I write a negative review of the Sony Support. I was hoping that I just have a defect. Sony blocks but and tells me that that would be no error and therefore also can not be repaired. And I ask is not to look in the dark films and reduce the backlight. I am all the way noticed at default settings (which are of course more likely designed for energy efficiency, as a nice bright image). That's already dark enough for me. And movies I watch, of course, in a darkened room. For me, Sony has been the non plus ultra. My opinion has now changed.