Hello, I’m looking to build a home theater system. I’m new to home audio and this website is a great source of information. Thank you. I’m looking at the onkyo 818 and in the description it says, “ ISF Video Calibration: Amazing Picture Quality, Assured ISF (Imaging Science Foundation) video calibration dramatically improves picture quality. Each video input source is independently calibrated to achieve the best possible performance from your connected HDTV.” Does this mean it automatically calibrates the input? No need to adjust the picture settings myself or have a professional calibrate it? One more question. Do you guys watch regular tv using the home theater speakers or use the built in tv speakers? Thanks.