The following issue has been discovered in Matscope 1.1.2, and will be fixed with the next release:
Issue description
When using a Stemi, the scaling in the Live image tab is not immediately affected by a change of the zoom slider. This means, if you change the zoom slider to a different value, even though the indicated total magnification changes, the scale bar and measurements with the quick measurement tool in the Live image will still be based on the magnification before the change.
This does not affect the scaling of snapped images.
Workaround
Snapping an image will cause an update of the scaling in the Live tab. Therefore, after each magnification change, snap one image and then return to the Live tab.
Best regards from the ZEISS support team.