Just in case you want to tweak this yourself, here's what you need to do:
1) Start GoblinEditor.exe (should be somewhere near sh5.exe)
* if its the first time you're running it, go to tools -> options and set both
ActorsDirectory and
RootFolder paths to your sh5 install folder (the place where sh5.exe resides).
2) File -> open -> data/library and select both cameras.gr2 and cameras.cam
3) Many ways to do this... one is to Select Dummy_cam_freecamera in the gds_scene tree. Right Click -> Edit Controllers
4) In the popup window select the
Optical controller and expand
ZoomLevels
5) Adjust as you see fit. You can add/remove entries by right clicking.
Pic below for reference of interesting points
