Hi guys,
here my base mouse scroll zoom input from ue4 beta. Maybe is helpful.
Well, technically this isn’t a zoom, since you seem to move the camera around.
Zooming would be done via Fov of the camera. But hey, whatever works for you
You start with a “TP_ThirdPersonBP”. In the “MyCharacter” “Blueprint–>Components” have you the “Follow Camera”. Go to the Graph and add the “Follow Camera” as target to “set relative location”.
FOV of camera is a perspective distortion. Not really useful for a e.g. 3rd person character.