The Oppenheimer 70mm film reel - all 11 miles of it - runs through the projector at a screening at the BFI IMAX Subscribe: http://bit.ly/subscribetotheBFI Claim an extended BFI Player Subscription free trial (UK only) - subscribe using code BFIYOUTUBE: http://theb.fi/player-subscription Watch more on BFI Player: http://player.bfi.org.uk/ Our TikTok: https://www.tiktok.com/@britishfilminstitute Like us on Facebook: https://www.facebook.com/BritishFilmInstitute Follow us on Instagram: https://www.instagram.com/britishfilminstitute/ Follow us on Twitter: https://twitter.com/BFI