I thought it was pretty common knowledge that Hoya supplied most (I hadn't heard all) of the optic glass used in photographic lenses.
It's part of the reason they picked up Pentax. Pentax has/had a medical optics division (Canon and Nikon do as well) that is bigger than the photographic division. On Wed, Mar 9, 2011 at 11:51 AM, George Sinos <[email protected]> wrote: > Dave Metz of Sigma was interviewed on This Week in Photography > (episode 191) and made an interesting statement. He said that all of > the lens makers get their glass from Hoya. The difference is in the > grinding and coating. (He did say that Canon and Nikon have another > source for a small amount of their glass.) > > First time I've heard this from a source in the business. > > gs > > > George Sinos > -------------------- > [email protected] > www.georgesphotos.net > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
