Quote Originally Posted by RidingWaves View Post
When the Noct was designed and built the use of aspherical elements was not common, those elements at that time required special cutting and polishing techniques, as well the reject rate on those elements we very high so that added to the cost.
The user of today is likely not interested how a lens was manufactured, but how it serves his needs.
That grinding of an aspherical lens would rather be of interest to a collector.