When using a film camera what must you do to bring an object into focus?

To bring an object into focus with a film camera, you need to adjust the lens until the subject appears sharp in the viewfinder. This is typically done by rotating the focusing ring on the lens while observing the image through the viewfinder. Additionally, ensure that the camera is stable to avoid any blurriness caused by movement during focusing. Finally, once focused, you can take the shot while maintaining the focus.