John Shutt wrote: > This is exactly why I don't understand the nomenclature that > seemed to only come into fashion with the advent of HD, of > calling 1920x1080 thirty frames per second interlaced as "i60" Two points: 1. ATSC documentation always says i30. 2. So, am I to conclude that 50+ years ago, 525/60 meant 60 frames per second? Bert ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.