Nuke's 3D Projection- using multiple cameras to paint out objects.

This tutorial shows how to setup a multi camera 3D projection workflow .Also, shows how to project several images onto a single card in Nuke and why it's so important to have more than one projection camera. I couldn't find a lot of tutorials showing how to deal with setting up a 3D projection workflow when dealing with a camera that is traveling forwards or backwards. Most tutorials show how to deal with a camera that pans left to right or simply takes a still image and project it onto a card. I wanted to show the issues that happen when a camera is dollying and how to deal with it.