The ISET distribution includes a large number of scripts that illustrate how to use the code to simulate different aspects of scenes, optics, sensors, and displays.

Published scripts

 
To see examples of scripts related to scenes, you can type at the Matlab prompt
s_scene<TAB>
Assuming ISET is on your path, this will tab-complete to the list of scripts that manipulate scenes.
Within the Matlab editor, you can select ISET functions and scripts to view and edit.
Videos that describe the theoretical basis and pragmatic use of ISET can be found at
Imageval instructional videos
Wandell instructional videos