Imaging Resource founder Dave Etchells was recently given a tour of Sigma’s lens factory in Aizu, Japan. His behind-the-scenes look reveals some interesting things about one of the major players in the third-party lens industry. One is the vertical integration: Sigma handles pretty much every step of the lens production process, from lens grinding to final assembly.
A Tour of Sigma’s Lens Factory in Japan —The Imaging Resource
Shared on Sep 21, 2013