My Oled picture quality was good when i purchased the tv but i was constantly trying to adjust the picture settings to get the best out of it but i just wasn’t happy with anything i was getting. YouTube videos didn’t help either so i searched the internet for a professional calibration and came across Vincent Teoh and I’m very happy i did. We arranged a calibration. Vincent arrived at my address a very pleasant person and then we sat down and started the calibration, He went through my settings and to see what i had and then saved it to compare his finished calibration. Using his high tec equipment he talked me through what he was doing and was very informative. The key is in the lighting of the room and Vincent knew how to set it to the conditions. The results against my settings are nothing short of fantastic. I didn’t see all the fuss surrounding HDR but now i certainly do the colours pop right off the screen. The black level is incredible. Across all my devices hooked up to my LG55B6V I’m loving the difference, Using Apple TV 4K, Sky Q and Xbox one X I’m getting the best out of these devices now. I can certainly say i would recommend a professional calibration by Vincent and i will be getting back in touch with him to calibrate my next tv :)