The 21x optical zoom is pretty useable, with good image stabilization all the way to the longest end. Similar to a smartphone, you can also pinch to zoom to further frame your preferred area, but bear in mind that it would be digital zoom in action.
The Galaxy Camera 2, while being a camera, also operates exactly like any other Android device once you leave the camera app. This means that the Galaxy Camera 2 has access to the Google Play store, and users can edit their images with the many photo-editing apps found in the app store.