The darkest shadow area
is created where the two
shadows overlap.This specular highlight is a
direct reflection of the small
Speedlite that I placed behind
the ball, high and to the left.
This large specular highlight is
a direct reflection of the large
softbox that I placed behind the
ball on the right. Compare it to
the size of the specular highlight
created by the Speedlite just to
the left.The hard edge of this shadow
was created because the
apparent size of the light source
(a Speedlite high and to the left)
was smaller than the subject.Both shadows move forward
from the ball. This reveals that
the locations of the light sources
were behind the ball.