Video: What is DX encoding and how did it become an industry standard in the analog age?

Have you ever wondered what those silver squares on the side of film cassettes are? They're called Camera Auto Sensing (CAS) codes and they're part of DX encoding, an industry standard first announced by Kodak in March 1983. While DX encoding might be common knowledge for some DPReview readers, others -- particularly the younger crowd -- might not know what DX encoding is, how it works and what it took to become an industry standard. These exact questions and more are answered and explained by A...