[BushCountry]

The images produced by the Beauchamp painting did not match the finesse of the original, but aptly demonstrated the viability of the technique.

I really get sick and tired of sites like these. There have been hundreds of explanations of how the shroud was created, yet no one, I repeat, no one can duplicate the Shroud exactly. With thousands of years of technological advancements in science, I will not be happy until someone can precisely duplicate the Shroud exactly, using technology from the correct time period. I do not want to hear that it is possible until it can be proved.

[Salamander]

A great book on the subject is called "The Resurrection of the Shroud".
I got mine on Barnes & Noble's website, dirt cheap and brand new.
They may still have some copies left.

[Question_Assumptions]

Well, the other question that they usually fail to mention is why the technique would be used in the first place in Medieval times. Yes, knowing that the shroud is the desired end product, we can imagine ways to recreate it but why did a Medieval forger pick an approach to creating an image which, by Medieval standards without the benefit of modern photographic negatives, is faint and not terribly impressive?