How to take underwater art photos?

General underwater photography venues will set up some professional swimming pools, which are convenient and safe. The best shooting time is around noon. The camera needs a protective cover when it takes pictures underwater. It is best to choose sunny noon, because at this time, the sun is above, and the sun shines almost vertically on the water, with little reflection and the strongest light in the water.

Pay attention to the refraction of light by water. Never think that the distance you see underwater is the actual distance. Because the refraction of water to light is about 1.33 times that of air to light, the object in water looks 1.25 times larger than the actual volume, and the sight distance is about 25%. For a scene that looks 0.75 meters underwater, the actual distance is about 1 meter.