The olloclip is not just for photos, you can use any of the lenses for video too. The iPhone crops the video making the field of view more narrow than in the photo mode. The olloclip widens the field of view with the fisheye and wide-angle lenses and magnifies the video in the macro.
The olloclip is a quick-connect lens solution for the iPhone and iPod Touch
olloclip: Sunrise over the Pacific from the Huntington Beach Pier
olloclip: Sunrise over Monaco
olloclip introduction video: iPhone Quick-Change Lens System