To follow on from my frame rate video a chat about shutter speed and shutter angle .and the pit falls of the 50hz /60Hz flicker thing .....also a Quick Look at a really handy tool made by RED camera to help you sort out the correct shutter angle for filming
you can find a link on this page to take you to the App Store ....I have nothing to do with the website but it has tonnes of cool apps for filmmakers and photographer
https://profilmmakerapps.com/app/red-...