I did the light design as well as fulfilling the gaffer role on "Ulfberht". My light assistant was Rasmus Strandberg, and Camera by Jens Nordhausen. Trailer below:
Here are some behind the scenes pictures from a light person's perspective. For the one-shot exterior I had two 4k HMIs, through a diffusion screen, and one 2k HMI. Also two 2k tungsten lights + a 800w redhead to simulate fire.
Some more light-related behind the scenes pictures taken by other members of the crew.
I'm a freelance gaffer. I also do basic grip work.