Fast shutter speed, indeed!
I call this Mario's "Neurotic Bunny" habit. Every now and then he chews on the bars.
Another thing is the ability to zoom. If Mario is doing something I want to get a photo of, I usually have to get really close to him which causes him to stop and stare at me. Or, he will abandon his cute activity to come running over to me. With the new camera I can zoom in and he is unaware I'm taking photos. I also get an immediate reaction from the camera which means I capture exactly the moment I want versus waiting for the lag of the camera and capturing some other random moment.