Thanks guys. Yes, it's great fun to go to these festivals (thanks for the great link, Kaedorg!!!) dressed up like this. It really feels like time travelling.
Back to topic: I wrote that I was creating a new more detailed knight character. I wanted him to be a little bit more historically correct (as far as it's possible). I was searching the internet a bit and found that my knight seems to be already quite authentic. I thought for example that these pant-like trousers (which were actually stockings and suspenders!) should be a bit more loose, but if you look at old illustrations, the chainmail shirts and trousers seem to have a slim fit. Actually there were belts and laces to hold the stuff together, to prevent the loose sleeves and trouser legs for example from flapping around while fighting.
So I am going to refine my existing models and the textures.
Here is a short lighting animation I did for testing the reflection behavior of the chainmail shader.