I didn't have time to read all 56 pages of this thread for duplicate information, but I read at this website:http://hdguru.com/?p=131
"I quickly discovered that this Sony does not properly deinterlace 1080i in the factory default “Vivid” picture setting. In fact, it also drops 50% resolution in the “Standard” picture mode as well. However, the set does properly deinterlace the 1080i signal and does deliver all frames, and thus does display the full vertical resolution, in either “Custom” or “Cinema” picture mode!"
Since this thread is about getting the best possible picture I'm thinking that this bit of information will help somebody.
Since there is no specific date of when this article was written (except I know it is in 2007), does anyone know if this is still an issue?