I have already had occasion to use the Olympus TG-830 in different situations. I am very happy pictures underwater, they are bright and sharp. I live on a sailboat and carries this device anywhere. I'm very happy. A small flat compared to the Lumix TZ18 I owned before: the battery has less autonomy. The optics are very correct. The zoom is really good, we can go beyond X5, without affecting the quality. Very good product.