by David Crowther
In QGIS is it possible to change the zoom factor for the Zooming tools?
By default, when you use the Zoom In tool, the map scale will change by 200%. This means if the current map scale was 1:10,000 and you click to zoom in, the map scale will change to 1:5,000.
However, if you wish to change the Zoom Factor choose Settings > Options > on the Map Tools Tab > and the Zooming section you can change the Zoom Factor from the default 200%.
In this example, we will change the Zoom Factor to a smaller number e.g. 150%.
Once Applied, if you now use the Zoom In tool, you will notice that the map now zooms in using smaller intervals – which is very useful if you only want to zoom small increments at a time.