Tkbslc- you say there is no way to demonstrate a lens? Odd.
What I said (or meant to say) was that there is no way to demonstrate just a lens by itself. It has to be attached to a camera, right? So then there is more in the equation than just the lens. The camera sensor, in body processing, AA filter, resizing algorithm, monitor or paper quality, all come into play, wouldn't they? Or if you go analog, I guess the film grain and the developing technique woudl also have a lot to say about the sharpness.
Doesn't that make sense? I guess I am just saying I don't know how you ever make it just about the lens when we are all submitting our pictures from different computers and camera bodies which also play a part in the final image. There is no way to take the camera body out of the equation unless we all passed around the same camera body to shoot our sharpest picture with.