Olympus 1240pro zoom is loud.

There is the sound of paper rubbing when zooming, so the sound will be louder.

Don't move the camera in front of the desk. Let it stand for about 30 seconds to hear if there is any sound. If there is no sound, then you can slowly move your hand in front of the camera and listen to the sound. If there is, it is normal, because it is looking for focus to improve the shooting speed of the camera.