This discussion would go much better if you didn't try and put words in my mouth.
I confirmed what cannikin said. Without enlarging you can't tell. All cars almost the same? Just like lenses, it depends on how you measure. If you and I each left the same place at the same time, you in a corvette an I in a Toyota Corolla, and drove across town to the same destination at the speed limit we would arrive at same time. So without being told, no one would know which of us drove which.
The enlargement size is the speed limit. Raise that and eventually differences become apparent. So does that mean that because of those two cars only the Corvette is any good because the Toyota doesn't go as fast?
My point is that the standard we use for deciding whether a lens is bad, good, or great is much higher than it used to be.
Last edited by Parallax; 01-25-2014 at 09:46 AM.