Wonderful picture. I really like this topic... well, many of old p-v users know anyway that I am total freak for lenses, LOL
Panasonic lenses
EF lenses technologies
Fluorite, aspherical and UD lenses in Canon glass
http://cpn.canon-europe.com/content/education/infobank/lenses/fluorite_aspherical_and_ud_lenses.do
Photos from Sigma factory
http://www.dpreview.com/articles/0773575852/making-art-inside-sigma-s-lens-factory
Sigma Aizu (chapter 1)
Slightly offtopic, but
About Nikon factory
Sigma A1 test system
http://www.imaging-resource.com/news/2015/05/06/exclusive-sigmas-a1-lens-testing-system-revealed
Next Sigma chapter
Fujifilm XF 35mm f/2 R
The History and Science of Lenses
More photos from same Fijifilm tour
http://www.dpreview.com/articles/1323194220/behind-the-scenes-of-fujifilm-s-factory-in-sendai-japan
It looks like you're new here. If you want to get involved, click one of these buttons!