These pictures are ok for a cell phone. You would have to see the returns in person to really appreciate the detail that the unit produces. I have read many,many post on various sites from DI users who are EXTREMELY disappointed with the results they get and question the usefulness of this feature. I have only used the unit a couple of times and I don't get that. If you ask me, the only way you could get a better "looK" at the bottom and its structure would be drain the water and take digital photos.