Hello,
I’m pretty new to blender, especially when it comes to photorealistic stuff. Currently I’m trying to make a bonfire. Started from playing with flames. Ended up with 500 samples, for 5 second long animation. Each frame in 480p resolution takes almost 5 minutes with a lot of grain and fireflies. Full animation took 10 hours to render. From things I’ve found, increasing tile size halved the time, but it’s still far from perfect. Looking all over I did not find satisfactory answers. Can someone cone and look into this, please?
You could maybe decrease the lightpaths’ bounces a bit to speed rendering up.
To decrease the fireflys try to play with the indirect clamp value under sampling and enable multiple importance under the lamp properties. (not sure if that works for fire, but it does for lamps).
If it’s possible switch to GPU rendering under User preferences -> System and Render Settings -> Device, but i guess you’ve already done that.
Indirect clamp did the trick. Value of 10 remove fireflies, yet it’s unnoticable (for my eye) for the rest of scene. Multiple Importance was enabled, GPU rendering as well. What else I’ve found, is that increasing rendering tile size reduced render time 4 times! Also, noticed seed setting for render, there’s a button for different seed for each frame, which should increase animation quality without increasing render time. Now I’ve got to finish the scene thanks for advices
thanks for advices