... To turn it into a compact camcorder. It should be noted that the interfaces are hidden. To connect the camera z. B. via USB to the computer must be removed from the case they therefore. Likewise, in order to remove, for example, memory card, but that was supposed to be logical. The fold-out display is not particularly high resolution and is "only" as "Viewfinder". All menus are still displayed exclusively on the segment display of the AS100. The buttons on the left side (previous, next, play) are real button and connected by bus with the camera. The "record / enter" button on the back is unfortunately only a mechanical implementation of the "record / enter" button on the camera. With the implementation of these can also operate only with great effort. Persons who are not familiar with the camera, press a few times on it and then say "does not work". All in all, a nice accessory, if one knows how to deal with it. Whether the price is really justified, is another matter.