Hi,
I see the point.
Focus was on pistils of leftmost flower at maximum aperture, using live view at maximum magnification. Best I could achieve. Camera was not moved and conditions were not windy. Camera was on a very stable tripod, so any focusing error is mine, representing my own error margin.
Tripod has been moved and angle of view is a bit different. Moving the tripod was necessary to compensate for differences in focal length.
Best regards
Erik