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[Concept] Film and television special effects photography (as) one of the methods in underwater photography (like). Photographers and cameras to sneak into the water, shooting water scenes. =========================== Professional equipment] ----------------- [Cylinders] Studio hall, there are a lot of cylinders, it is the carrier of the divers to breathe underwater gas source. In addition to a single bottle, two-bottle combination. Some high-intensity, long diving when a bottle is not enough. Such as the stay 20 minutes in 60 meters of the place, work was done, an hour to go up. Because not all of a sudden surfaced to slow decompression, so a lot of gas. The gas is mainly related to the depth, 30 meters deep, a bottle of gas can be 45 minutes to an hour. If you are a potential 60 meters, then it would need two bottles of gas. Gas consumption according to different people but different from, the oxygen demand of the same depth of female users is generally low. ----------------- [Air compressor] All the equipment, the largest weight of this gas compressor. But it is an important one in the diving equipment. Diving photographers need to use it to compress the filling gas cylinders inside. So although it is heavy, but it must be which ones with which ----------------- Diving suit] Diving suit is essential scuba diving clothing, do not look like much, the light equipment but it also has a lot of knowledge. The diving depth is relatively deep, the deeper the lower the temperature, so the diving suit not only the skin plays a protective effect on the human body plays a warm, of course, comfortable, durable and is also very important. Good diving suits due to differences in the use of materials, thickness, etc., generally are very expensive. In addition, supporting the diving suit, there are some diving boots and gloves. ----------------- [Fins] Fins is different from the diving boots, it is an underwater power devices. Allow divers in the water swimming with his legs, and with both hands and feet paddling more efficient, so that both hands can be freed to engage in other work. Of course, depending on the needs of the fins is also divided into a variety of, and have different characteristics. If the photographer underwater in order to place the arrival of the high efficiency they want to reach, and still holding the photographic equipment, fins allows the photographer to move and shoot can do more with less. ----------------- [Mirror] If you've ever tried to open their eyes in the water, you know the scene you see is vague, it is because the density of water than air, and light to the water will be refracted. The focal length of the eye is adjusted according to the light in the air, therefore, the mirror of your eyes retain the cavity, so that you have a clear line of sight. Mask and swimming goggles biggest difference is that the former is not only covered the eyes still covered nose, to help balance the nasal pressure and to avoid the nasal cavity water while diving. ----------------- Dive tables and dive instrument] There are a variety of diving watch, dive computer can provide in-depth, dive time information, and further can calculate dive time limit and no-decompression limits. Some computer tables can also be calculated emergency decompression safety stop depth, some computer table can be based on the current depth, air consumption situation to calculate the remaining air time. This practice will enable the diver to fully grasp the residence time in the underwater. The dive computer has become one of the diving essential tools, many foreign diving sites requiring the use of the dive computer can be latent. Simple little meter diving through the dial to display the cylinder pressure, the residence time divers to hold their own. At the same time, it comes with the compass feature, so dive master in the direction of the underwater. ----------------- [Regulator] Regulator divers bite in the mouth breathing device. Help breathing, adjust the pressure. Diving breathing gas is compressed gases, the pressure regulator to avoid inhalation of excessive gas in the breathing. Regulator, there are many. ----------------- [Buoyancy control vest] Buoyancy adjustment generally vest and oxygen bottles with divers in the water buoyancy control demand. ----------------- Dive light The diving depth is deeper, darker light, there are a lot of people interested in a night dive. So this must be diving lamps to provide light illumination. Of course, this type of light on a wide range, many kinds. These information on the Internet easy to find a good dive light is still expensive. Perhaps there are some other diving equipment. Completed the preparation of the diving equipment, but also good diving photography equipment to complete the underwater photography. Of course, we can think of, underwater photography is nothing more than an ordinary photographic equipment coupled with a waterproof device. ----------------- [Camera lens] Want to know why we usually use the 70-200 and other telephoto cannon is not selected? Underwater, the light transmission of not so good in the air, not too far of a lot of time diving lights or flash according to the same conditions, using a telephoto lens requires a longer exposure time to obtain adequate exposure, and image quality will be because of the distance is too far down. Therefore, underwater photography to a wide-angle lens, close-up shots based. ----------------- Body diving mask] Malaysia's three in the water also need to wear waterproof clothing ", the reason why your diving photography, in addition to high technical requirements, the cost is also high. ----------------- Spare machine Of course, in addition to expensive in Malaysia three, as a professional underwater photographer, why use a small DC, and choose the S90 but not the G10/G11? In this regard, that some small digital camera with good words and they can shoot a satisfactory film. After all, we do not want each photo to enlarge to 1 m 2, then the ordinary output, general machine has had enough. Moreover, G11, compared with the S90, the quality difference is not so great. Advantages of the S90 is small, for Malaysia three photographers already has a huge body, they need a more compact spare machine. G11 and G10 was not much, but if assembled and waterproof cover, and so on, the volume is very considerable. In fact, we see that the S90 and waterproof cover with volume only and the size of the G11. In addition to the S90 and it's waterproof cover, but also to equip them with a diving flash, and professional Malaysian three, this combination seems more fashionable leisure. ----------------- [Flash] Underwater photography, flash is the most important one. In addition to diving lights as part of the light source, a photographer with a flash is necessary. ----------------- [Arm] All of the equipment described above, photographers how to use the underwater? The answer is the need to arm. The arm will flash, the camera connection is fixed, so one person can complete the photography operation. =========================== [Awakened door] Eye contact is the most important. Close to the fish, let it at least one eye can see you, if the two eyes can see you, so much the better. The fish eye is very beautiful, but their color with the angle of your flash exposure. If possible, the same fish can 拍几张照片. Try to show some of the fish's natural biological behavior, such as cleaning, camouflage, mating or order to the site of the battle. Add more rich content, rather than simply to just one fish, the photos will be more alive, more interesting. Four medium-size fish is not suitable for the header shot. If a fish can make you from being by very recent shooting using the wide head. This screen can provide a spectacular sense of perspective and depth of field. Five in the open water sharks and eels sole is a very alert animal. Their back is dark, and the belly is white. Never want to use TTL. Select an appropriate aperture and shutter according to the ambient light, to reduce the intensity of the flash, and then to fill your viewfinder like. If the ambient light dark, you can use a slow shutter. As usual using the flash, but the shutter speed is set to 1/15 or 1/8 seconds. Vague fins or tail to give people the feeling of a movement and speed. , Fish photography need to understand animal behavior and environmental knowledge. You know the more, the easier it is to find them more able to close them. 8, on the one hand, you need to have a great deal of patience, on the other hand, they need to have a quick swim. Therefore, in the shooting of fish to avoid the bulky equipment. Nine in the shooting of most fish, two flash does not lead to better results and will hinder you to swim fast. Only when a fish to make you rely on are close enough, and the second light is placed in the side or behind, the only lights have a purpose. 10, large fish, such as the great white shark or whale sharks, they will often travel to the place from the surface of the water close. The surroundings here are light. In this case, you should avoid using flash. Even in very clear water, and also dust scattering. There are photos of this scattering is never more than the photos not bright. =========================== Note the problem --------------- 1, the best shooting time is around noon] In underwater photography, the camera shield underwater photography is the best choice for sunny noon, the sun when the top of the almost vertical sun shines on the water, very little reflection, the strongest light in the water. --------------- 2, to pay attention to water refraction of light] Do not think that you see in the underwater distance is the actual distance, due to water light refraction is about 1.33 times the air refraction of light, so objects in the water looks better than the actual volume of 1.25 times, the line of sight distance of about 25%, the scene of underwater look at 0.75 meters, the actual distance of about 1 m, not in the manual focusing illusion. --------------- 3, [Select high-speed film is appropriate] Water light is weak, difficult to be end camera in the water swimming, the use of low-speed film is difficult to coagulation screen. Use fast film the ASA800 ° above can solve this problem, but the rough image particles, color reproduction is not ideal. Therefore, the use ASA2 00 ° to the ASA400 ° of medium-speed film is more appropriate. --------------- 4, the auxiliary light source essential] To about 10 m water depth, and only use the flash and other auxiliary illumination, in order to ensure the correct photo color restore. --------------- 5, as close as possible to the subject] And then clear water of suspended particles, the farther from the subject, the clarity of the photo worse. So try to use the wide-angle lens shooting near the subject. --------------- 6, [Note shooting angle] To try to avoid the camera directly down to shoot, because cis-ray pictures are the lack of levels and contrast. The best shooting angle contour or below the subject with the subject, when the light side light or the backlight side, the pictures are structured, contrast medium. =========================== 【Article is excerpted from: Baidu Encyclopedia】 |
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