Re: Sims 4 won't stop zooming in
@saggoat First of all, please make sure you're not accidentally pressing the wrong key, or that the wrong key isn't firing on its own. You can test in another app that uses the same key. That would be Z on an English layout; it's the same in some but not all other languages. The scroll wheel on your mouse can also scroll in and out, as can a swipe gesture on a trackpad. Please make sure these aren't happening on their own as well; a browser window should respond to either input.
If that's not the issue, please go into Documents > Electronic Arts > The Sims 4 and move Options.ini to the desktop, then test the game again. This will reset all your in-game options, so if it doesn't help, you can delete the new Options.ini and put the old one back.