We have talked about focus, and about what happens when your camera is moving too fast to take a good picture… like when you are in a car… but now, let’s talk about motion blur. That is when you are trying to take a picture of something that is moving… like a baby… when you are bouncing him on the couch.
Even a small amount of motion can cause the blur. You can use this to take some awesome pictures. If you take a photo of a person running in front of something, like trees, for example, and you keep the camera still, the person will be blurred, but not the trees. I mean, this can also depend on how you focus the camera too, but you see what I mean. If, however, you move the camera to follow the running person, then the person will be in focus but the background will be blurry.
I suggest you practice these techniques… but maybe not on a baby that is bouncing up and down towards and away from the camera… because in that case, your camera has no idea what you are trying do.