
I hadn't questioned the authenticity of portraits such as this; this and similiar ones seem to be rather common depictions of Luther. I wouldn't be surprised if sometime during his life someone drew a picture or painted a portrait of him...
I remember reading a bit about Luther years ago and am pretty sure that he gained quite a bit of weight in his later years. it seems like the movie focuses more on his earlier years. I hadn't looked at the movie site until today; now that I see that Joseph Fiennes is cast as Luther, I'm very curious how he fits the role. initially it seemed odd, but I've been impressed with his acting in the few movies I've seen him in.