Think of it as a Black Swan event. An event very hard to predict that could not have been anticipated, so rare that we could not see it coming.
A lens is compared to other quality lenses of similar vintage and type, using sound methodology devoid of any possibility of flaw. And the results reveal that this lens is hugely superior in rendering an image at f/64 than any of the other lenses. This result could not be anticipated because it did not reveal itself, so far as we know, in any comparative testing provided by the manufacturer. Nor had the specific superiority been observed in empirical observations extending over more than two or three decades.
Sandy
Bookmarks