The phone photos are stored inThe storage location of the photos taken by the mobile phone varied according to the mobile phone model and operating system. Generally speaking, Android phones usually store photos in DSIM.(Digital Camera Image) folder, this folder may be located in the phone's own storage disk, memory card, or SD card. The specific path depends on the installation location and the naming rules of the memory card. For samsung phones, the photos may be stored in the images, photo, or picture folder by default. If you took a photo using WeChat, you can open the photo in the WeChat app and choose to export it to an album. You can also open the DSIM folder in the phone's own storage disk to view it. In addition, when the phone was connected to the computer, open the memory card and find the dcim folder. The photos taken were in the sub-folder camera under this folder.
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Android phone flashing photosIf an Android phone flashes when taking a photo, there may be the following reasons:
1. When the anti-flash function was used together with the WVR, it was easy to cause a flash screen problem. The anti-flash function was generally used indoors to filter the ripple-shaped flicker produced by the light. If the anti-flash function of the equipment was always turned on, it might cause a flash screen.
2. If the gain and exposure time of the automatic exposure were not properly set, such as when the digital gain was written to 0, it might cause some slight flicker.
3. If the weight value of the region of interest was too high, the exposure strategy would be in the highlight priority mode. In order to prevent overexposed, the brightness value would be appropriately reduced. When the AE algorithm found that the brightness of the image was smaller than the target brightness, the brightness value would be increased again. This increase and decrease would cause flicker.
4. For some sensors, when the automatic exposure adjustment speed (u8Speed) is greater than 64, the image may flicker.
5. The exposure time and sensor gain do not meet the linear relationship. For example, when the exposure is 4096, the relationship between the distribution of exposure time and gain does not meet the requirements. The adjustment of the ADC may cause flicker, which can be solved by setting f32Offset.
6. If the system's gain allocation is unreasonable, it may also cause flicker. For example, if the sensor's digital gain, sensor's digital gain, and ISP's digital gain are not reasonably limited, it is easy to cause flicker.
If you encounter a flash screen problem, you can try the following solutions:
1. Remove the anti-flash function (because the anti-flash function will cause the screen to flash when used with the WVR).
2. Added digital gain adjustment (check if there is only again adjustment but no dgain in the code. It has been verified that dgain will also affect flicker).
3. He adjusted the weight of the region of interest.
4. Adjusts the brightness of the target (for example, from 65 to 128).
In addition, past usage errors could also affect:
1. The exposure strategy, high light priority, low light priority, was used wrongly.
2. The exposure deviation value is not set properly (if the value is too low indoors, the image is too dark).
3. The digital gain of the sensor was not adjusted.
4. The anti-flash treatment was always on.
5. The weight value of the region of interest (indoor and outdoor) was too high, causing the brightness of the outdoor mode to not be increased, and the screen was too dark.
6. The area of interest had a great influence on the average statistics, so the brightness of the outdoor mode could not be increased, and the screen was too dark.
At the same time, there might be problems with the camera itself, such as screen brightness optimization. Whether it was indoor or outdoor, the brightness of the camera was low. Although it could be solved by turning on WDr, it would bring about problems such as increasing the bit rate and increasing noise. The reasons for the low brightness of the image included that the exposure strategy in outdoor mode used highlight priority and the weight value of the region of interest was too high, so the image brightness could not be improved due to being too sensitive to highlights; the exposure strategy in indoor mode used low light priority, but the exposure deviation value (u16EVBias) was set too low, resulting in the final target brightness being particularly low, making the indoor mode image very dark.
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Mobile phone, movies, photosI'm not sure what you mean by "mobile phone movie photography". If you want to use your mobile phone to take photos or videos with the texture of a movie, you can refer to the following:
* * 1. Picture composition **
1. * * creative composition skills **
- Use composition methods such as the rule of thirds, symmetries, and leading lines to increase the visual appeal of a photo or video. For example, when shooting a winding path, they would use a guide line to guide the audience's line of sight.
2. * * Different scene composition **
- * * Character Scene *
- If you were shooting a character in portrait mode (which could be used for close-up shots of characters in movies), you had to highlight the subject and weaken the messy background.
- * * Scenery **
- For shooting a wide landscape like a mountain or a city (similar to the panoramic shots in movies), you can use the panoramic mode of the phone to ensure that the picture is clear and can show a wide field of view.
* * 2. Shooting Mode Selection **
1. * * Normal Mode **
- It is suitable for basic shooting in a variety of scenes. Focus, exposure, and other parameters can be adjusted according to needs. For example, when shooting scenes that contained character conversations or simple plots, if the background and main body needed a certain degree of clarity, the normal mode could be used.
2. * * Portrait Mode **
- It could be used to shoot characters and highlight the main character by blurring the background, just like the main character in a movie. It could also be used to shoot food, flowers, and other objects that needed to be prominent.
3. * * Large Aperture Mode **
- It could also be used to shoot food, portraits, etc. The main purpose was to blur the background and make the subject clearer. This was very useful in creating a close-up shot that felt like a movie.
4. * * Night View Mode **
- It was used to shoot brightly lit scenes at night, such as night scenes in movies.
5. * * macro mode **
- It was used to take close-up shots of small objects such as flowers, grass, and insects. It could show the beauty of details, similar to the close-up shots of small objects or local details in movies.
6. * * Professional Mode **
- It could be used to shoot night scenes, moons, fireworks, light paintings, car tracks, waterfalls, and other special scenes. However, it required learning the sensitivity, shooting speed, and many other parameters, which was difficult. If you wanted to shoot some special effects commonly seen in movies, such as car tracks (showing the passage of time or heavy traffic) or light painting (creating fantasy light and shadow effects), you could try using professional mode.
* * 3. Setting parameters **
1. * * Aperture, Shutter Speed, and USB **
- In many shooting modes, such as normal mode, multiple exposure mode, etc., the aperture was generally in the range of f/2.0-f/2.8, and the shutter speed and IQ varied according to different scenes.
- * * Shooting a moving picture (similar to the moving scenes in movies)**
- For example, when shooting a fast-moving car, use the motion blur effect to show the sense of speed (similar to the car chasing shot in the movie). The mode can be selected as normal mode, aperture f/2.0-f/2.8, shutter speed 1/30 seconds-1/60 seconds, and the IS is 100 - 400. Focus manually to ensure that the background is clear. You can use a tripod to keep the phone stable.
- * * Capture a still image (similar to the stop motion shots in movies)**
- For example, to shoot the petals of a flower (similar to the close-up of key items in movies), use macro mode, manually focus to ensure that the details of the petals are clear, aperture f/2.0-f/2.8, shutter speed 1/125 seconds-1/250 seconds, and the IS is 100 - 400.
- * * Long exposure (similar to the time-lapse photography effect in movies or the colorful night scene effect)**
- For example, shooting city streets at night, using long exposure to capture the trajectory of traffic (similar to the busy and bustling city at night in movies), using long exposure mode, shutter speed of 1 - 30 seconds, and an IQ of 100 - 400. Manual focus to ensure the stability of the picture, and using a tripod to keep the phone stable.
2. * * Focus and exposure adjustment **
- When shooting, you can click on the subject to be shot with your finger, and the camera can automatically focus on the subject to make the shot clearer. The finger clicked on the main body and paused for a moment to lock the focus. At the same time, a small sun would appear next to it. Pulling the small sun up could increase the exposure and make the picture brighter. Pulling the small sun down could reduce the exposure and make the picture darker. When shooting a movie-like scene, the exposure could be adjusted according to the atmosphere you wanted to create, such as a bright and happy scene or a dark and suspenseful scene.
* * 4. The use of the camera **
1. * * Telephoto lens and wide-angle lens **
- When he clicked on the photo mode, the words w 0.5x 1x 2x 3x would appear. W or less than 1x meant a wide-angle lens. At the same distance, it could be used to shoot more and wider scenes, such as the opening of a big scene in a movie or a magnificent landscape shot. 2x and above represented a telephoto lens. The larger the focal length, the closer the object could be, and the smaller the viewing range. However, the larger the focal length, the more noise there would be, so the clarity of the picture would decrease. Usually, 1x and 2x lenses were the most commonly used. When shooting, you can choose the appropriate lens according to the effect you want to express (whether to show the overall scene or highlight a certain part).
* * 5. Shooting Support **
1. * * Using a tripod **
- When shooting long exposure pictures, still pictures, or scenes that require a stable image (such as shooting dialogue scenes or pictures that require precise composition), it is necessary to use a tripod to keep the phone stable. This helps to improve the picture quality and reduce the blurring caused by hand shaking, just like using a stabiliser in a movie.
2. * * Selfie Stick **
- If you need to take a selfie of yourself (for example, take a selfie of a movie narration or a first-person perspective shot), you can use a selfie stick to adjust the appropriate height and angle for easy shooting.
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