Frosted glass + light

[hannesgrebin]

hey guys, looking for a way to create realistically looking frosted/milk glas. I know I have to increase the ray bounces to 12 in the settings to have fair results (otherwise black areas) but actually the frosted glass does not work with light properly. From what I know you can only render two images with one the frosted glass and one same surface applied with emissive light retouched in Photoshop afterwards. Any better idea? Thanks! Hannes