That's definitely not the optical-flow slowdown trick I'm talking about. That spiderman slow-motion was some combination of 3d effects and maybe real-life camer

That's definitely not the optical-flow slowdown trick I'm talking about. That spiderman slow-motion was some combination of 3d effects and maybe real-life cameras ("Matrix" style: https://beforesandafters.com/2021/07/15/vfx-artifacts-the-bullet-time-rig-from-the-matrix/ https://beforesandafters.com/2021/07/15/vfx-artifacts-the-bu...) https://www.youtube.com/watch?v=FCfdyroV7kc https://www.youtube.com/watch?v=FCfdyroV7kc This scene from 300 is very clearly just a wide-angle shot (initially), with someone playing with the Optical Flow timewarp effect (sliding it up and down). Its incredibly cheap. See this demo in Premier Pro: https://www.youtube.com/watch?v=ErOc_LkZaIk https://www.youtube.com/watch?v=ErOc_LkZaIk ---------- That's the thing. 300's main innovation was using _cheap_ effects. Optical flow time-warp didn't appear on Premier for another few years, but the algorithm was popular and was just a custom filter / program that was getting passed around at that time.