What equipment do you need for underwater photography?

Not to mention the initial investment of camera+diving shell+lamp, the weight of equipment carried during the trip, and the management and operation of equipment under water may greatly reduce the fun of diving itself. I just got back from the Philippine Mint FD, and I struggled for a while before this trip. I took a photo with GoPro when I was diving in Taiwan Province for the first time. I looked at the black card 3 at hand and hesitated whether to put on a waterproof shell. I saw Kangmei ikelite and the lamp on the bracket. In the end, it was almost higher than the travel budget, so I simply gave up. In fact, GoPro is a good machine, except that it is not easy to shoot macro. It's ok to take pictures of big scenes. The main factor affecting the film effect is the lack of underwater light after going to a certain depth. In the absence of fill light, the red filter and depth control are the tricks. Video screenshots have unexpected effects. I haven't played GoPro5 yet, but watching the introduction video has enhanced the stability and RAW camera mode, which will definitely improve the effect compared with the previous generation. I have a silver 4, and the screen on my back is compared with the black dog (no screen). Flip's filter combination, this brand provides an outrageous combination for different waters and depths. I bought three? Filter? The kit includes three kinds of filters: shallow water type (over 6m), submersible type (6m- 15m) and deep water type (over 15m). Shallow was abandoned because only two filters can be assembled at a time. In practical use, Dive filter is very effective. Unless the light is particularly strong at the depth of 0-6m, the effect of using the filter is better than that of not using it. Even at about 20 meters, the filter still has a good correction effect. On the other hand, the picture taken by Deep at about 20 meters will be red, but it will cause distortion. Going down to 25-30 meters will be better than diving.

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