How can I make the clouds in this image less blocky?

Support Materials and Textures
1

I’ve been using True Earth to render out some really nice images of, well, Earth. This works fine for wider shots, but if I zoom in I start to notice that the clouds get really blocky, as seen on the right side of the attached image. The clouds are done with a volume shader + displacement, so I guess it’s a matter of increasing resolution, but I can’t figure out how (haven’t worked with volume shader before).

Render: https://imgur.com/9MIWDF5

Don’t think I can upload the .blend file here since this is a bought product, but ask me and I’ll post screenshots of the interface if you guys want to see specific settings.

Later edit: forgot to mention I’m using cycles to render this.

Any idea how I can fix this blockyness? Thanks in advance!

2

To increase the resolution of the volume, reduce the Render Panel → Volumes → Step Rate.

The other issue could be the resolution of the texture you are using to drive the volume density/displacement.

3

Ok, figured it out in the end - the way True Earth is set up, you have to select the True_Clouds object, go to modifiers, Subsurf, uncheck adaptive subdivision and just mess with the subdivision levels (3-4 render subdivisions worked just fine for me).

4

Thank you for your suggestion! In the end it was a subdivision issue.