I have been looking and studying a lot on the Nikon 50mm f/1.4D as well as f1/.8D. The latest up in arms big factor to discuss is the contacts being created in Chinese suppliers contrary to formerly in Asia. They discuss construction becoming more plastic content in the f1/.4 as well as probably dropping some top quality in sharpness. Looking for individual expertise from anyone here. Anyone have the created in Chinese suppliers f1/.4D and can comment?