Hi! This is the first time I am posting on HTF. I was a good boy and read up on some home theatre basics in the primer provided here but I have a question regarding convergence. I have a Toshiba 42H82 rear projection digital TV. So far, I am happy with the picture, but I know I am only scratching the surface of what it can truly be (planning for an ISF calibration at some point in the future). A friend of mine (who posts here I believe) went into the Keohi website, pulled some technical specs for me and now I go into the system and do my own convergence via the crosshatches. My question is, should I or do I have to do a unique convergence for all forms of viewing or does the fact that I go in once and do a convergence cover the picture in whatever form I choose to view it? My gut says it doesn't. The Tosh has TW1, TW2, TW3, Full and Natural. I use TW1 and Full most often.