Here’s a thread discussing the failure of various naturalistic theories to explain the Shroud of Turin. We don’t just need to explain how the image could have been produced, but also why it happened with Jesus in particular and not with other individuals, the timing of the image formation (around the time when other evidence suggests Jesus was resurrected), and how the removal of the body from the Shroud didn’t do more to disturb the bloodstains and damage the cloth. I think that Jesus’ resurrection is the best explanation for the totality of the phenomena. But what I want to highlight here is something Barrie Schwortz wrote in the comments section of the thread linked above. Schwortz is an advocate of the view that the Shroud image formed as a result of a Maillard reaction, and Ray Rogers held the same view, yet Schwortz writes:
Ray Rogers told me personally that he believed, “Something else was at work with the Maillard reaction,” but he didn’t know what that was and didn’t live long enough to explore it.
[ . . . ]
Of course, we might imagine that the something else might be miraculous. I rather suspect that Rogers didn’t think so. I do. But then again, as I have said, I consider any image caused by radiation, as well, naturalistic. The only question is where the very natural radiation came from – like from a resurrection event?
I think Jason thoughts on this are most useful.