How to render only a mist pass I have spent a long time rendering an animation that I do not want to redo. I also want to render a mist pass though. Is there a way to render only the mist pass without rendering the original images? Sorry if this is a dumb question, it's just that in all of the tutorials, they show how to render both the original image and the mist pass.
I guess you could enable the mist pass, and in the compositor, Ctrl+Shift+LMB to view the mist pass and you'll get the viewer node. Press N to open the side panel and in the Item tab there is an option to save that as an image. [the viewer node has to be selected in the last step].