https://tv.filmfreedom.net/videos/watch/5e64e8f3-4ea3-41a3-8574-02246da17e1f This is a good example of an animation mistake that didn't show up until final rendering. The grass in this shot is a billboard particle system. Normally, they are not supposed to move, and so the "Physics" simulation panel is set to "No". However, in this case, I mistakenly set it to "Newtonian", which apparently causes the grass to fall under the simulated force of gravity, causing a very disconcerting and obvious error in the final render. However: there were no animation key frames at all in the scene file the grass is taken from (it's defined in a background set); the grass does not appear at all in the GL pre-visualization renders; and the movement was really not obvious in the handful of check renders I ran prior to rendering the shot. Lunatics Project | lunatics.tv CC By-SA 4.0 Thu, 16 Jul 2026 14:42:01 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tv.filmfreedom.net https://tv.filmfreedom.net/lazy-static/avatars/80d22e60-02aa-4f93-839d-61379972023c.png https://tv.filmfreedom.net/videos/watch/5e64e8f3-4ea3-41a3-8574-02246da17e1f All rights reserved, unless otherwise specified in the terms specified at https://tv.filmfreedom.net/about and potential licenses granted by each content's rightholder.