1. In the context of 3D graphics, what corresponds to each of the following items from traditional photography? Explain your answers. a. Film b. Rectangle in viewfinder c. Scene being photographed 2....

1.
In the context of 3D graphics, what corresponds to each of the following items from traditional photography? Explain your answers.

a. Film

b. Rectangle in viewfinder

c. Scene being photographed

2.
When using a perspective projection, under what conditions will a sphere in the scene not produce a circle on the projection plane?