How did you make that beautiful underwater scene in the movie?

Compared with land shooting, underwater shooting is extremely difficult, and underwater dynamic lens is much more difficult than underwater photo shooting. From the use of equipment, photographer's physical quality, shooting difficulty, actor's performance and so on. They are all facing great challenges. We choose a blue background cloth and spread it over a large area. Taking a video is different from taking a photo. The laying area must be large to avoid taking a shot. Moreover, the key technology generally uses blue-green background cloth, and blue is biased towards the color of conventional water, which makes it easier and more convenient to synthesize special effects in the later stage.

How to instruct actors to interact with the camera? First, the underwater demonstration is conducted by an underwater assistant. On the one hand, the photographer is allowed to adjust the parameters according to the actual environment and light brightness, so as to reduce the number of times the actor enters the water, ensure that the actor is in the best state and avoid being too tired. On the other hand, it can guide actors and remind them of matters needing attention. The characters we shoot are not so natural underwater. First of all, you need to slowly enter the water, and it is best to hold your nose first. After entering the water, slowly loosen your nose, put some air into your mouth, gradually dive to the right position and open your eyes; At this time, you can release the pre-set actions and then hurry.

You need to practice launching many times, and each time is very short. Photographers should pay attention to every shooting operation. Our underwater light is weak, so it may be a bit expensive to buy an underwater flash when necessary. Therefore, natural light can be used reasonably. When shooting in the swimming pool, you can wait until noon when the sun is strong, and more light will enter the underwater environment. The advantage of the swimming pool is that the water depth is not too deep, and the light entering the water gives the people just the right light. Many times you don't need a flash.