Is there some fuzzy rule about when the attention of a person, or pony, should be drawn straight into the camera or left unaware of being photographed?
When photographing people I don't know, I aim not to be spotted, so that the scenery or facial expression isn't altered by my presence. Photographing friends however works often in quite the opposite way. I like to snap them just at the moment when they look into the camera but before they put on face for the camera. Apart from avoiding motion blur, I think there is a fascinating mental aspect to a camera's ability to stop motion within a short 1/4000 of a second.