Photography, black metering

Iphone 7 exposure, what happened to the screen? It should be the iPhone 6S released in September this year.

How can the iPhone7 released next year be exposed now?

In fact, this rumor of exposing Apple's mobile phone in advance every year is false.

What about exposure compensation? 1, modern cameras adopt automatic metering technology for convenience, the most common one is central key metering, but this metering is based on 18% gray scale and the average value of the whole picture plus the central part, which is more accurate in most cases, but when encountering a large area of bright or dark background, automatic metering is still based on 18% gray scale. If there is a villain in this background, there will be black characters on a white background or white characters on a black background.

2. Exposure compensation is to solve this problem, that is, to make up for the error of automatic metering by increasing or decreasing the data of camera automatic metering. Usually, the increase or decrease range is within the range of 1/3. Note: This increase or decrease is manual.

3, the principle of increase and decrease, simply put, is one sentence: white plus black MINUS. That is, it increases when it meets a white background and decreases when it meets a black background. For example, the figures in the snow will increase by more than one file, and the figures in front of the crimson curtain will decrease by one file.

4. In addition to the central key metering, SLR cameras have also added different levels of integrated metering and spot metering. The latter two kinds of photometry have higher accuracy, but exposure compensation is still needed as appropriate.

What's wrong with the screen of iphone5? My iphone5 does this occasionally. Exactly the same. After going to the authorized after-sales service, I made an official consultation call. They all said nothing. To put it bluntly, the system is occasionally unstable, just like the downtime of Android. It doesn't happen often, and it's okay occasionally. The official said that the factory settings could be restored and solved, so I solved it, and it has been fine until now. Happy New Year!

The computer screen is always beating. What's going on here? Check whether the connection between the monitor and the video card is loose or the video card is faulty.

The words exposed by the engraving exposure machine are not obvious. What happened? Is the seal imprint not obvious, or what's going on? Wang Sheng, who is looking for materials for printing seals, can help you solve this problem.

Just open the WeChat screen and flash back to the desktop. What's going on here? Common reasons for WeChat flashback: First, file corruption leads to WeChat flashback. When encountering this problem, repeatedly reloading WeChat can't solve the problem. You need to clear the WeChat data first and then reinstall it. Press the menu key to find the system settings-> For applications (some mobile phones have different names), find the WeChat icon in the list, click the pop-up information interface, and then click Clear Data. Second, insufficient space on the SD card leads to flashback. Many games or software will flash back when there is not enough space on the SD card. Press the menu key to find the system settings-> Storage (some phones have different names). If the available space is less than 1M, some applications should be deleted or cleaned up.

Due to insufficient memory! If you don't want to recharge WeChat, uninstall other infrequently used applications and clear the cache ... If not, uninstall until only WeChat remains. You can clean up the cache in WeChat first thing after opening WeChat, and you will find at least 500m of garbage. If you haven't cleaned up the WeChat cache after using it for more than 1 year, the difference is mostly1g. ...

What's with the light band under the screen of Samsung s7? The following actions are recommended:

1. Turn the machine on and off again.

2. Switch to a different interface and see if this happens in the same place. Initially eliminate the background problem of the model.

3. Try to restore the factory settings.

If the problem still exists, you need to actually test the physical machine. It is suggested that the S7 mobile phone be sent to the nearest Samsung service center for testing, and the service center will determine the specific problems and accessories of the mobile phone according to the test results.

How to restore the screen exposure of iphone x Hello, X has the phenomenon of screen burning. Once used for more than half a year, the screen will appear afterimage. If the same static screen is displayed at the highest brightness, the screen aging will be irreversible after 17 hours. Because it is irreversible, it can only be solved by changing the screen. If you are satisfied, please accept it.

What happened to the screen flashing after the shutdown? It can be said that there is something wrong with the monitor. You can try changing the positive and negative poles of the power supply. It is possible to show that the power supply is turned off at the negative pole.