Hi, Field of view, gamma, gain and bloom is overrided in camera modifier BP_SettingsCameraModifier.
You can modify this blueprint to add custom effects such as zoom.
https://i.imgur.com/3niDWIt.png
When you “Add New Camera Modifier”, you can cast the return value and call the modifier when you want to apply an effect there.
https://i.imgur.com/AWM9JSc.png