You have to over-correct your view a little and then save it with a key combination. For example if you want more zoom, you zoom in but more than you need and save it. Check the view and it will have less zoom than the view you saved. Save the same view again and again it will have less zoom. Do that untill you are satisfied. If not, you have to edit de cameras.cfg file like in this post: Carenado Piper Arrow for MSFS to be released imminently - #139 by GaseousBeatle92