Move a camera to the center of a selected object without zooming

You can move a camera to the center of a selected object(s) without zooming in or out by selecting View > Center View of Selection from the viewport panel menu.

Alternatively, you can use the viewFit command with the -center flag; for example, as follows:

viewFit -center

Similarly, you can also use the viewLookAt command to position the camera to look at the center of the selected object(s).