While discussing perspective, Tom explored the
'cone of vision', and also the effects of distance
and viewing point on how things appear.
These three Styrofoam heads have not been moved,
but the VIEW POINT has. They are not equal distance
apart. In the picture on the LEFT there are four
boxes spaced evenly apart just as in the photo
above it. The third from the front has no head
on it. The rear head is twice as far from the
front one as the second one is.
With the use of boxes, hangers and manikin parts
Tom pointed out many perspective phenomenon in
typical portrait arrangements. Here we see how
the 'body' represented by a box is clearly tilted,
yet when seen from above and to the higher side,
it appears horizontal.