Back in the golden age of photography, after film had advanced to pretty much the level of perfection but before cameras tried to do the thinking for you, photography magazines routinely tested and reviewed lenses. It was a real challenge to stretch the various components to their limits for the optimum image quality. But now that pictures are made up of little squares big enough to drive a truck thru (at least a small truck), it is no longer fashionable to advertise the finer points of optics.