PAL vs NTSC
"PAL vs NTSC differences & purpose goes back to power type and frequency. We use 60 HZ power in America while Europe has stuff cycling at 50 HZ. We had an issue last year at Winter X Games in Tignes France. We had decided to film everything in NTSC to be able to have optimal framerates for TV commercials back in the US afterwards; however, when we were filming at night for the half pipe all of our NTSC footage was flickering like crazy – this is because the lights in Europe are running at 50 HZ. Be careful when you’re filming dark scenes but it’s generally a good practice to film in your countries’ native power cycle-age – PAL in most european countries and NTSC in the Americas and parts of Japan."
Autor sugeruje, że po ciemku, kiedy palą się lampy lub żarówki, żeby używać częstotliwości nagrywania takiej, jaką ma sieć w danym kraju, inaczej możemy mieć dyskotekę na nagraniu