Nay sayers must explain how the image is created in 3 dimensions. AND a bunch of other things that are peculiar to The Shroud.
Regarding the ‘3 dimensions’ reference: I recall reading a report done on the ‘angle of defraction’ of light which might have produced the negative on the cloth. The sum of all angles where imprinting occurred points to a single point inside the cloth for both front and back images on the cloth.