What is the spark for taking pictures?

Question 1: What does the spark symbol on the camera interface of Xiaomi mobile phone mean? (As shown below) It may be a beautification function. I have never used this phone, so I don’t know. I am just guessing

< p> Question 2: Why did old-fashioned cameras have sparks flashing out in the past? Just like lightning, there was no flash before. Magnesium powder was used to burn and emit light, so there would be sparks and white smoke

Question 3: After the hard disk is formatted, is there any way to recover the previous files? If you are not a data professional Recovery personnel, and if the original data is very important, it is recommended that you do nothing, keep the hard drive, and then ask for professional help.

This is because the methods proposed by friends above are all irreversible, which means that once these methods are used, it is very likely to cause permanent loss of data, and there will be nothing the gods can do about it.

Of course, if it is not that serious, you can try the above method. Remember, once operations are performed on the hard disk, especially write operations, there is a great possibility of permanent loss of data. So, it's best to be sure.

Question 4: Looking for a clip of an ancient camera taking pictures. It is the kind of camera that has sparkles when taking pictures. Any video can have this clip. ! 10 points Search on Youku

Question 5: What does welding photography mean? It is to use an X-ray machine to take pictures to check the welding quality of the welding joint and archive it.

Question 6: Looking for a video of an ancient camera taking photos. It means there will be sparks when taking a photo. Any video will do. Just have this clip. The spotlight of the past

Question 7: Photographing flames and lights? Night scene photography requires some necessary exposure knowledge and shooting skills, but this is not an advanced professional technology. By making good use of the digital cameras in our hands, we can take unimaginable night scene works. Your question involves a lot of distance and light. I can’t answer it by just answering the question. I’ll give you some explanations

Characteristics of night scene photography

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1. The subject is prominent and the theme is clear

In night scene photography, due to the darkness, some scenes that are unnecessary or even destroy the picture are hidden in the darkness, while the main part of the subject or scenery is hidden due to the darkness of the night scene. The needs should be highlighted with appropriate lighting to give people a distinct impression. For example, when photographing a construction site, some of the messy piles or dilapidated work sheds are difficult to avoid in the picture during the day, but at night, most of these things are hidden in the darkness, and the subject can be easily highlighted using light. Come. It can be seen that night scene photography has the characteristics of prominent subjects and distinct themes.

2. Exaggerate the scenery and exaggerate the atmosphere

Due to its unique shooting method and tone processing technique, night scene photography has the specialty of exaggerating the scenery and exaggerating the atmosphere. It can use light to create shadows and exaggerate the sceneries being photographed, making them more prominent than the scenes in reality and having a strong appeal. In addition, it can also use special shooting techniques to make full use of the characteristics of the surrounding environment and render it reasonably to make the atmosphere of the shooting scene very intense. For example, if you shoot a train station during the day, the scene will not be lively, there will not be many trains, and the atmosphere will not be strong. For example, if you are shooting at night, you can use multiple exposures and open the shutter every time a train comes. This will leave bright lines of the locomotive lights on the screen, thus creating the busy effect of a running train.

3. There are many light sources and dual functions

Night scene photography often has many light sources at the same time, which are different from the light sources in daytime photography. Like lights, firelight, moonlight, or sunset, etc. It has a dual role in night landscape photography: it is both a light source for lighting and an indispensable component of the picture. In a night scene photography work, if there are no lights, firelight, or moonlight illuminating scenes on the screen, then the atmosphere of the night scene photography will be greatly weakened.

4. The main objects to be photographed are still life objects

When shooting night scenes, the objects to be photographed are mainly static scenery. Generally, it is not suitable to shoot fast-moving objects. Because the light at night is weak and the illumination of various scenes is very low, a longer photosensitivity time is required when shooting. In addition, the light contrast in night scenes is very strong, and the difference between bright areas and dark areas is very different. If you adopt a quick exposure, it will not only underexpose the film, but also reduce the level of the picture, making the photos lack charm.

2. Precautions for night scene photography

1. Prevent the camera from moving

When taking night scene photos, the camera should be tightened on a tripod or placed on a stable and stable place. place. When adjusting the aperture, pressing the shutter, or observing the scene, do not touch the camera body. This is especially true when performing multiple exposures. Otherwise, ghosting will appear on the film, causing the shooting to fail.

2. The use of aperture

When shooting night scenes, special attention should be paid to the use of aperture. Because it affects the clarity of the scene. For some night scenes, because the light is very dim, the shooting distance cannot be determined accurately. Therefore, the method of narrowing the aperture and increasing the depth of field is often used to deal with it. When shooting night scenes, the commonly used aperture is f5.6 or f8.

The position of some scenes is relatively fixed and the light does not change much, so the aperture can be appropriately smaller, but the exposure time should be extended accordingly, so that the clear range of the scene can be larger. When making multiple exposures, you can use the aperture to adjust the light sensitivity according to the intensity of the light on site

3. Measurement of distance

The measurement of shooting distance should be as accurate as possible, otherwise it will directly affect the The clarity of the scene. Generally speaking, when shooting large scenes at night, the distance can be infinite. When taking mid-range or close-up shots, you need to focus. The clearer the focus, the better. The focus should be set on the position of the main part of the subject or scenery, and then measure it after lighting it with a flashlight. You can also use the bright spots near the subject to measure. Once the distance is determined, it cannot be changed arbitrarily during the shooting process.

4. Control of exposure

The exposure of night scene photography is relatively complicated, and you cannot rely on the light meter. You should explore the rules based on reality. There are two exposure methods: single exposure and multiple exposure. (1) One exposure: One exposure is easier to master. Before shooting, set the camera on a tripod and determine the subject and framing range. After framing, check the fixation of the camera again, and use the shutter cable to control the opening of the shutter to perform a time exposure. There is no shutter release cable, you can use the lens cap to control the open shutter. (2) Multiple exposure: Two or more exposures are called multiple exposures. It is used when one exposure cannot complete the shooting task... >>

Question 8: How to take pictures of a welding electric spark camera (or camera phone and other shooting equipment) through a welding mask ( Commonly known as: welding helmet), you can take pictures.

Place the shooting equipment behind the welding helmet, and select the appropriate filter lens model according to the welding current. The greater the welding current, the darker the lens color. The lens model number is larger. Open the shooting equipment to take pictures. If possible, it is better to use an automatic darkening welding helmet.

Only through the welding helmet filter lens can you clearly photograph the molten pool and avoid spatter from ablating the camera lens.