On Dec. 2, 1986, musician, actor, television producer, writer and director Desi Arnaz died in Del Mar, Calif., at the age of 69. His death was due to lung cancer, which he had been diagnosed with that same year.

Arnaz, along with cinematographer Karl Freund, have been credited for the development of the multi-camera setup production style used in situation comedies subsequently.  📺   🎬   🎥