Thanks for the explanation Rod. I had no idea the Schneider 72mm lens was this poor.
For example, according to this information at F8, the Schneider 43mm lens can give critically sharp focus at infinity (however infinity is defined by Arca-Swiss), but the Schneider 72mm cannot even come close to being sharp at infinity ... even though it has significantly higher magnification due to its longer focal length. Wow, this is awful.
The infinity value for the 72mm lens must be greater than 62.5 meters, which is the farthest depth of field indicated at its F16 setting for infinity focus. The fact that the Schneider 72mm lens can only get to 36.2 meters at its farthest depth of field at F8 is a really poor performing lens. My Mamiya 80mm lens does not behave like this, and gives me very sharp results at F8 for more distant objects when focused at infinity.