In a closed environment that’s possible. In a moving / simulated one, not so much.
You can do traces via c++ or bp off anything for anything.
Check this if you really have no idea.
Positioning the camera / bringing it close up is OK.
You can even clip into the characters.
Most characters have single sided skin, so if the camera is inside them you wouldn’t necessarily even know.
You can adjust clipping to be 1cm in the project settings.
Thats usually a must anyway or the corners of a wall you get near to can clip. Disabling the whole clipping system would be even better if it were possible (its not, the cost remains even with 0 clip value).
There really isnt a thing such as “zoom” in engine. You can try to set the aperture of a cinematic camera to different focal lenghts.
That’s as close to a “zoom” effect you can get.
They are still subject to near clip plane.