Complex sentence: When zooming in, the storyteller guides the reader to follow his/her point of view, delimiting the reader's scope and finally leading the reader to the object of focus, or the focalised object.
Split into simpler sentences: When zooming in, the storyteller guides the reader to follow his/her point of view. The writer then delimits the reader's scope and finally leading the reader to the object of focus, or the focalised object.