I have been told that some lenses require special aspheric tools to be surfaced. Spectralite and Gradal top for instance require this.
My question is, does this indicate that a lens is "fully aspheric"? Is it possible for instance, for a panamic that doesn't require this tool to be as aspheric as Gradal?
Did I ask that well?:hammer:
Perhaps someone knows what I am trying to ask or just reads minds...
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