The black and white picture of the face of the man of the Shroud
shows us how small the shade difference between the light and dark values of the imprint
is. For this reason human eyes can perceive the features of a human face only globally,
and they cannot distinguish details very well.
The light
distribution of the facial image is exactly opposite to the one we perceive in real
things, in fact the projecting parts of any object present shades that are lighter than
those belonging to more distant anatomical parts. The imprint of the Shroud behaves like a
photographic negative. The blood stains, which are directly imprinted on the cloth, behave
differently. |
In the photographic negative of the Shroud we notice that light and shade
effects are evidently reversed if compared to those of a normal photographic negative.
Besides, there is a spatial transposition that causes an inversion between the right and
the left side. The bright part of the cloth looks dark while the signs that belong to the
anatomic areas in relief, look bright, with shades of intensity that mirror the
curvilinear movement of the facial lines. |
