I am making a game, and I would like to be able to zoom in and out of a map and would like to know how to do that. Can anyone help, please?
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Several variables here… Do you want to zoom the Camera itself or the Object? Is the map a GameObject or Sprite? Are you using an Orthographic camera or Perspective camera?
I would like the camera to zoom onto the object (which is a gameobject) and I’m currently using a perspective camera.
Likely what you’re looking for:
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That doesn’t work I get a error message saying
‘NullReferenceException: Object reference not set to an instance of an object
CameraManager.Update () (at Assets/CameraManager.js:9)’
I found something that works Clamp Mouse Zoom using Scroll Wheel (SOLVED) - Questions & Answers - Unity Discussions
It maybe help to you
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I’d hope that they would’ve gotten this working within the 5 years after they posted this thread. 
@Vryken But remember that some people come to the thread much later, and can still use newer advice.
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