I would suggest &#x27;traditional&#x27; cameras and telescopes are all about being able to trace back the origin of light.  So, if light hit part if your sensor X,Y it must have come from location A,B. Pin hole cameras work just fine for this, all the lenses are just trying to collect more light without creating excessive much distortion.<p>Computational photography instead focuses on modeling things so if you observed A, B, and C, then Y must be true.  Which enables things like CT scans to work where traditional X ray force you to look at shadows.