Somebody at dpreview thinks that way:
"This probably is what is causing the varied results people are getting from the new 50/1.4 G."
Is there a problem with the new Nikon AF-S 50mm f/1.4G Lens? I was not aware of that.
Here is a pamphlet from Nikon on their Environmentally Sound Optical Glass.
Can eco-glass be as good as regular glass (Nikon claims so)? Is eco-glass = recycled glass?
fyi - I do believe in recycling and I am happy that Nikon does too.