I found this concept difficult to evaluate as to whether the “point” or item placed within the frame is relative to the frame or not. I took a series of photographs at Shipton Weir Lock on the Southern Oxford Canal showing a blue rubber glove in different parts of the frame. In each case the glove was not intended to be part of the composition but your eye is drawn to it because of its colour. I then took a series of photographs at Bakers Lock on the Southern Oxford with a white plastic mug in different positions. Again I felt although the cup was of no relevance to the composition your eye is drawn to it because it has no link with the lock. The cup was larger than the glove so it may be described as a shape rather than a point. I concluded from this that the “point” in a composition is the item(s) which draw your attention, whether intended or not.
Shipton Weir Lock, Southern Oxford Canal