Great memorial to Don Iwerks who passed away at 96:

An allergic reaction to photographic chemicals forced him out of the Process Lab and into the studio’s Machine Shop. It was a twist of fate that proved transformative for both Iwerks and the company. Over the next three decades, Iwerks designed cameras, optical printers, special effects systems, and projection technologies that became essential to Disney productions and attractions.

Not as well known as his father, Ub Iwerks, but what an amazing career. Rest in peace.