For movies there's 1.37:1 (more or less the 3:4 of SD TV), the 1.85:1 (more or less the 16:9 of your widescreen TV) and 2.35:1 (widescreen movie, even wider, so gives black bands below and above when shown on 16:9 screen of widescreen TV).
Hi all. I'm relatively new to HDTV. I own a Panasonic TCP-42S1 plasma and DMR-EZ475V DVD recorder connected with HDMI to a Scientific Atlanta 4250HD set top box. OTA HD broadcasts look great. However widescreen DVD's have black lines top bottom. The DVD is set to 16:9 TV size. Please advise if there's anything I can adjust.