Been trying to do some research and not a lot out there about this old lens on newer cameras. Found some experiments with Sony and Nikon - with mixed success, but has anyone tried or heard about someone trying this lens on an RF body? Not looking for crazy fast focus especially on a lens this old, but thought it could be a heck of portrait lens if it focuses accurately above all. The only expert review I found is that it is sharp, and I figured it could be worth the low cost as a fun lens for non-critical stuff. However, nothing on functionality with an R body. Any input is appreciated....

