Hi Jacob, so unfortunately what you're describing is a side effect from how perspective works in general. If you travel forward by say 10 units, it will only have a very small effect on objects that are really far away from you, but for objects that you are close to the same 10 unit travel distance will have a much more magnified effect.

If that's bothering you a lot, you can set the 3D view into parallel projection mode rather than the default perspective mode. To do that, go to Options > View > "3D view projection" and set it to Parallel. In parallel mode zooming in and out works by a zoom scale factor being changed. In perspective mode a zoom involves moving the eye point around instead.

If you want to have a parallel projection for your default setup, you can save a 3DM file that has been set to parallel projection and then set that file as the startup template under General > "Template file".

re:
> Is it possible to control zoom speed via macros/javascript?

Yes, try something like this:

For faster zoom:

script: moi.view.zoomSpeed3dx = 3.0;


For slower zoom:

script: moi.view.zoomSpeed3dx = 0.3;




There is also an option you can change in the moi.ini file to use a different type of zoom behavior, where instead of moving by a fixed amount it's some fraction of the distance of the camera point to the rotation pivot point, to try that go to Options > General > "Edit .ini file" and inside there find the [3Dconnexion] section and set ZoomApproachTarget=y like this:

[3Dconnexion]
<...>
ZoomApproachTarget=y


- Michael