Frequently asked questions about children's diving age-underwater photography guide

Friends who are going to take the diving certificate will encounter some problems when they go diving. These problems are common, as well as underwater photography. If you have this imitation wheat, you can continue to watch it.

Children's diving age PADI stipulates that the minimum age of divers is 8 years old,1over 8 years old 12 meters for children under 2 years old and 18 meters for children over 2 years old. Age 15, you can apply for "open water diver"

Water route, the maximum depth is 18m. There is no upper age limit for learning diving. Age is not an obstacle as long as physical conditions permit.

Frequently asked questions: Can you dive without swimming?

Theoretically, deep diving and snorkeling don't need to be able to swim. And with the protection of professional diving equipment and buoyancy control devices, you can study diving even if you can't swim. But swimming will make you better adapt to the underwater environment and make diving more comfortable. For example, in OW class, the coach will repeatedly teach you how to float, how to empty the breathing tube and how to kick the flippers. Xiaobai, who can't swim, can master diving skills. In other words, diving is to carry water with a gas bottle on your back, unlike swimming, which requires breathing on the surface. Therefore, as long as they are not afraid of water and learn to use diving skills and equipment, most people can enjoy the process of diving.

Can students with glasses dive?

The answer is, of course, yes. And students who are not used to wearing invisibility can also choose a mirror with a degree. Generally, diving shops will provide myopia goggles. Generally, the binocular degree is the same, and astigmatism is not included. It is enough to see things in the water. Of course, students who are used to wearing contact lenses can consider wearing contact lenses, because they can always see clearly from preparing equipment to launching.

Can girls dive during their menstrual period?

If possible, it's best not to take relatives diving with you, but relatives must follow and can't drive them away. When they arrive, they will be safe. As long as you don't feel too uncomfortable, you can use a tampon, but it is recommended to change it to a clean one every time you dive, or not at all in a small stage. Just wash it with water. As for whether sharks will be attracted, every diving instructor likes it, because sharks are not interested in human blood at all. There are hundreds of kinds of sharks in the world, most of which are surfers in cold water areas. The shark has a bad eye and thinks it is a turtle or a seal, so he comes up and takes a bite. If it is not greasy enough, they will lose interest immediately. Don't be misled by the movie. If anyone can attract sharks, coach.

What do you need to prepare for the first dive?

First of all, swimsuits, of course. OW courses are usually offered for three consecutive days. In order to make a good replacement, it is best to bring at least two sets. Other professional equipment that can be used will generally be provided by diving shops without additional preparation. But more personal equipment, such as jellyfish clothing, can also be called sun protection clothing. If you don't want to wear the wet clothes provided by the diving shop, you can dive directly in your own jellyfish suit. In addition, if the myopia glasses provided by the diving shop are not suitable, you can prepare the myopia glasses in advance, and it is best to consult the coach and follow the advice of professionals before choosing glasses.

How long does it take to learn to dive?

OW courses usually last for 3 to 5 days, including 5 units of swimming pool training, 4 dives in open water, as well as theoretical classes and exams. Three days is basically full, and at least 18 hours of no-fly time is needed after the diving course. It only takes about two days to get to AOW, and there is another * * *

5 diving. There is no fixed content in the course. Generally, there are top neutral buoyancy, underwater navigation, lost and found, diving planning, release, deep diving and night diving to choose from.

What if English is not good?

If you are studying diving in Southeast Asia, most islands will have Chinese instructors at present, and Europe and the United States generally teach in English. Therefore, it is also very important to choose the place of class according to your English level, especially during the study of OW, you already have a lot of basic knowledge. If your English is not good, it is recommended to find a Chinese coach to teach.

Underwater photography 1, the difficulty of underwater photography

The refractive index of water is different from that of air. The object observed by the mask may be 25% larger than the actual one, so it is difficult to judge the distance.

Water absorbs light, and red absorbs it faster than blue. The deeper the depth, the lower the light level.

Water can also reduce contrast and clarity, so try to get close to the subject.

2. Underwater photography is necessary.

Flash: It can provide a comprehensive light source, which is especially important for underwater photography.

Waterproof shell: it can bring the camera into the water and protect the camera well.

Macro lens: a special lens installed on the camera or outside the waterproof shell for macro photography, mainly used to shoot very fine objects. It is usually used in combination with macro photography to capture small and slow-moving creatures.

Close-up wide-angle: it is a kind of wide-angle photography, but at the same time the picture contains close-up subjects. This technique of taking both wide-angle and close-range shots is challenging in lighting and composition, and can also create works with great visual impact.

3. How to make a blockbuster?

Use the light skillfully.

Because photography is a combination of light and shadow, the use of light is particularly important. The deeper water absorbs light, the more colors it absorbs, which is one of the reasons why many photos are dim and blurred. Therefore, babies who want to sneak out of the film should try to play in the sunny afternoon. At this time, the penetration of sunlight is very helpful for photography.

Pay attention to the shooting distance and parameters

Change the aperture according to the required depth of field. It is recommended to use the small aperture of F 16-F29 for shooting very close objects. Use a larger aperture when shooting distant objects.