[def4d]

post a render?

[Hervé]

I am rendering some glasses here... and I have to admit .... they have a red tint (very very light...) .... actually it looks more Magenta.. I guess you're using physical sky... re-try with emitters...

[rivoli]

a picture would help, but anyway, i guess it may have to do with the abbe of your dielectrics. try increasing it to 120/150, that should help.