Through Frosty Glass

Initially for this tutorial I've made 3 different glass materials with different level of frostiness. Check out side to side comparisons.

For all three examples I've used same Denoiser settings:

Colour influence 1: 0.200
Colour influence 2: 0.200
Feature influence: 0.150
Final Pass: 0.450
Filter Radius: 10

The differences are only in material's roughness and R2 settings (fresnel curve)

Cheers 🙌🏼