How to take photos in caves?

The formation of karst caves is the result of long-term dissolution of groundwater in limestone areas. Insoluble calcium carbonate in limestone can be converted into soluble calcium bicarbonate under the action of water and carbon dioxide. How to take photos in caves? I'll teach you the travel network!

Cave photography requires preparation in advance;

1. Auxiliary tools necessary for tripod. The cave should be shot slowly, and it is difficult to hold the camera steady. You can shoot it with a tripod.

2. There are decorative lights in the hole. When shooting, you should pay attention to avoid direct light to the lens and use a hood.

3. Generally, the humidity in the cave is high, and the temperature difference between inside and outside the cave is obvious, especially in winter, when the camera enters the cave, it often casts a layer of water vapor on the lens. The prevention method is to seal the camera with a plastic bag before entering the hole, and then take it out for use 30 minutes after entering the hole. If you don't have time, you must bring a lens cloth or something that can wipe the lens after entering the hole, and you must wipe the lens before shooting, otherwise the viewfinder will be blurred. )

Never use flash, or you won't get the lighting effect in the cave.

5. The aperture value uses a small aperture to ensure sufficient depth of field. Manual focusing is the best choice for focusing.

How to shoot scenes in caves;

1. When shooting the wonders of caves, we usually choose places where stalactite images are concentrated, or show wonderful and magnificent strange scenes, or show specific moving images, such as stone statues and beasts.

Step 2 use spotlights. Because the caves commonly used for sightseeing are illuminated by lights, mainly visual stalactites and colored lights. Although these lights are limited, they can evenly illuminate and display the layers in the cave and distinguish the image of the main stalactite. If you choose the right shooting position, stabilize the camera on a tripod and expose it for a long time with T-door or B-door, the photos you take are still ok.

3. After setting up the camera, observe the surrounding environment, adjust the aperture to F4 or F8, and control the exposure time correctly. Due to the different colors of light in the hole, overexposure or underexposure will seriously affect the film. Pay attention to the change of color temperature and don't trust the automatic white balance of the camera. This is because the color light in the cave is too miscellaneous, and the camera will also have the consequences of misjudgment. Generally speaking, the film is red, because the color temperature set by the camera is high; The film is blue because the color temperature of the camera is set low. According to the film, the color temperature is corrected to make the color true and satisfactory. You should know that the color temperature has nothing to do with the brightness and temperature of the light source, but only with the purity of the color. Simply put, the higher the color temperature, the bluer the spectral components; If the color temperature is low, most of the spectral components are red light. These two conclusions are unshakable basic principles when we correct the color temperature.

4. Before framing, consider how to highlight the object to be photographed and try different angles and viewpoints. If you just take photos of this trip, you don't have to think about how to take them.

Shooting skills:

1. lens? Wide-angle telephoto is both shot and telephoto is hung. (If only there were two bodies or a spare machine like Panasonic LX3, you can take into account the wide angle, and you don't need to change the lens when you want to shoot a wide angle. )

2. The tripod must be brought. Pay attention to turning off the lens anti-shake function after the camera is put on the shelf.

3. flashlight? You must bring headlights, preferably. You have time to get one this afternoon.

4. rain cover? I'd better accept it I just watched today's weather forecast. It's 8- 13 degrees. Yes 17/65438+

5. exposure meter? Not yet. Let's look at the histogram. Aperture priority shooting, according to the histogram to decide whether to increase or decrease the exposure.

6.aperture? According to the choice of the subject, try different apertures.

7.ISO？ 100, since the shelf is used, the image quality is the main one, and the exposure time is not bad. There is no need for high ISO noise reduction.

8. White balance? filament lamp

9. Reliable style

10. Flash? No, when you take a portrait, you use the built-in flash to fill the light.

1 1. Drive mode? Single shot, line control, mirror pre-elevation shooting.

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