You've got your camera and you love what it can do. The more you learn about your camera, the chances are you'll end up buying more than one lens for it... in fact you'll probably end up with a few! Changing lenses is really straight forward, and we do it without thinking. Making sure you do things like keeping your camera upside down when you change lenses, and not changing them in a dusty environment will ensure you keep your camera working smoothly.