I’d like to see some advanced class in photography try to recreate the image using some of the old techniques, quite a challenge I suspect, but it would put to rest the “early photograph”. Until that happens, it’s a “he said, she said.” thing.
Thanks for being a little more reasonable than the ROTFLMAO types who overreact, always a sign of weakness.
It is NOT a "he said, she said" thing. What part of "there is no substrate or chemical fixative, residues from any of the photosensitive chemicals on the Shroud down to the x-ray micro-spectrographic level" do you fail to comprehend? The subject has been put to rest to a degree that there is no more question.
If the image were a chemically changed photosensitive material, the residue of that added material and it's other chemicals would still be there making up the image. They simply are not there. We are talking about tests that were able to discern the compounds that made up the material of the vinyl baggies the threads were carried to the test lab in. That is how accurate these tests are.