Never could get convincing fog out of flat planes in Blender - they always clip through everything and look fake.

Blender 5.1's Raycast node fixed that, so I built BlendFog: fog cards that fade into your geometry. EEVEE + Cycles

Free + full pack: jesperbylov.gumroad.com/l/ayhrrl

Youtube:
https://youtu.be/Kp99uyrD36E

#b3d #blender3d