Disable/Overwrite minimumZoomLevel of map

[ginkgoguy]

Hey,

is it possible to overwrite or disable the minimumZoomLevel property of a map?
I want to show the whole earth. The minimumZoomLevel of the Map-Plugin is 0 but the documentation says the minimumZoomLevel is also canvas-size-dependent (http://doc.qt.io/qt-5/qml-qtlocation-map.html#minimumZoomLevel-prop) to prevent grey borders.
So the actual minimumZoomLevel is 2.69, but I want to zoom further out.

Thanks for your help,
Gingkoguy