All shots taken on tripod. Head locked down. Test executed in MUp (Mirror Up mode) with remote control to minimize shake. All shots taken straight after each other except for the change of lens, which took me a minute or so. ISO 100 & all focus manually (MF) set for first shot & then not changed, camera in A (aperture) mode. Also, I remembered to lock the metering sensor this time.Focus point is the large white splash almost at the top 1/2 x 1/2 it's a little less not quite center - slightly off center to the left.I have a slight fear that I may have messed up the focus just a tad on these....