> There's a blog post I can't find any more about a camera nut visiting one of the last Japanese refactories capable of making lenses and the excruciating proce

> There's a blog post I can't find any more about a camera nut visiting one of the last Japanese refactories capable of making lenses and the excruciating processes they go through to make complex zonally variant glass. Was it this one? https://www.imaging-resource.com/news/2018/04/17/glass-for-geeks-an-in-depth-tour-of-nikons-hikari-glass-factory https://www.imaging-resource.com/news/2018/04/17/glass-for-g...