05-04-2012, 06:36 PM
[quote name='Frank' timestamp='1336134071' post='18012']
It has been rumored that this lens contains a hand-made glass element，which is also rare for modern Nikon/Canon lenses.
[/quote]
I think you are referring to the 'hand polished' aspherical lens element. Nowadays aspherical glas lens elements are precision molded, a technik that was not available in the days the 28/1.4D was designd. Or at least not available for lens elements of the required diameter. I can't say if the aspherical element of the 28/1.4D (or the 58/1.2 Noct) where 'hand polished'. Even if they where there was no guy rubbing a lens element between his fingers. The lens was mounted in a polishing machine and the worker was operating the machine by hand.
Today they would use CNC controlled polishing machines.
It has been rumored that this lens contains a hand-made glass element，which is also rare for modern Nikon/Canon lenses.
[/quote]
I think you are referring to the 'hand polished' aspherical lens element. Nowadays aspherical glas lens elements are precision molded, a technik that was not available in the days the 28/1.4D was designd. Or at least not available for lens elements of the required diameter. I can't say if the aspherical element of the 28/1.4D (or the 58/1.2 Noct) where 'hand polished'. Even if they where there was no guy rubbing a lens element between his fingers. The lens was mounted in a polishing machine and the worker was operating the machine by hand.
Today they would use CNC controlled polishing machines.