Question

4. What is a pentaprism? What job does it do in the camera?

Answer 1

A Pentaprism is five sided and a prism with two silvered surfaces giving a never ending light of rays of light through 90 degrees.

Answer 2

Pentaprism is a five sided prism with two silvered surfaces giving a non-stop deviation of all rays of light through 90 degress. Used in viewfinders of single-lens reflex cameras