protozoan
It's probably a bit confusing when trying this for the first time.
You create the Karma Physical Lens not in a material library, but a Material Network.
So put down a material network on /stage or in your lopnet, dive inside, and then you can find it in the Tab-menu.
Ah I see, yes, I can see it now in the material network context thank you.
After having created the node, I see it as an option to create in the stage>material library node context in the history section when I press tab/right click, what is the difference between these contexts and should I stick to making my materials in the normal material network context? Is this an exception for the camera lens shader only?
Thank you for your help.