The price of bitcoin is low
many people may not have a special impression of bitcoin, that is to say, its rise ring the epidemic in 2021 is very high, and its overall price also makes us feel terrible and shocked but I didn't expect that the current price of bitcoin has dropped, and its main price has now dropped to $48000. But we all know that the price of bitcoin has risen to nearly 50000 yuan before, and now we all feel that we cherish such a decline. And the occurrence of this thing is also unimaginable to all of us{ RRRRR}
when dealing with this problem, if we do not pay attention to it, it will also cause very bad results to ourselves . So this also tells us that we should pay attention to this problem, otherwise, the result will make us all feel very bad. So this tells us that for bitcoin now, it is likely to continue to decline in the future
1. Take close-up pictures of small still objects, such as flowers, birds and insects:
use AV file, the aperture should be f5.6 or below, the focal length should be more than 50, and try to shoot within 1m to make the background virtual
if the light is good, ISO 100, if the light is bad, ISO should be within 400<
2. Shooting people:
basically use a large aperture (within f5.6) and a focal length of more than 50 mm. The shooting distance depends on the whole body, half body and big head, which makes the background virtual. Use AV file
good light, iso100, bad light, iso400
people in motion use tracking to reflect the sense of motion (see the shooting of moving objects below for details)<
3. Shooting:
AV file, use the appropriate aperture, above F8, the focal length is arbitrary, but generally the wide-angle end has distortion, use it as appropriate<
4. Shooting night scene:
upper tripod, AV gear, custom white balance or incandescent lamp, aperture above F8, small aperture can make the light proce starlight effect, use the reflector pre rising function to rece the vibration caused by the reflector lifting after pressing the shutter; And cover the viewfinder with the square cover on the strap to prevent stray light from entering from the back and affecting the image quality; ISO 200, as far as possible to make the exposure time longer, so that some people who have no intention to walk away from the screen disappear, leaving no traces, clean the scene
for example, when taking a square with people coming and going, you can use a very small aperture of about F20 and iso100. In this way, the exposure time will be very long, and the moving figures will not stay in the photos! The square will be clean<
5. Shooting fireworks:
using shutter line and B shutter, you can shoot multiple fireworks overlapping effect<
6. Shooting things:
when the light is good: AV, the aperture size should be handled according to the circumstances; Large depth of field can be obtained by using aperture above F8, and shallow depth of field can be obtained by using small aperture
if you want to have a very dynamic effect, you can use the TV gear, the shutter is about 1 / 30, when you focus and press the shutter, the lens will follow the object at an appropriate speed, which will proce a very dynamic effect
poor lighting: we can only handle it according to our own discretion, plus use the follow-up camera<
7. Shooting running water or fountain:
using TV and about 1 / 50 shutter speed, you can shoot Satin effect. If you use too fast shutter speed, the fountain will shoot discontinuous water drops<
8. Taking photos at night:
use tripod to adjust white balance, and automatically or custom white balance; iso100-400 AV gear, aperture about F8, use slow synchronous flash, rear curtain flash mode; At this time, the flash will flash twice, press the shutter to flash once, and flash again before the end of exposure, so don't leave before flashing twice
in this way, the characters can be clear and the background neon is beautiful, so that the background will not be too dark e to insufficient exposure< No matter what you shoot, don't shoot with the maximum aperture unless you want to keep a safe shutter
2. Please use the aperture of F8 ~ F11 as much as possible when shooting scenery
3. The maximum aperture can be reced by 1-2 levels when taking close-up of people and still life
4. The safety shutter should be controlled above the reciprocal of the focal length as far as possible. The wide-angle shutter should also be more secure at more than 1 / 30 second. If the shutter is insufficient, please increase the aperture or ISO<
metering method:
1. Don't measure the light to the sky or the darkest place. Go to the middle value
2. According to your subject matter, make good use of the metering mode (balance metering, point metering, central key metering...)
3. If the light measurement is not accurate, please use AE lock to expose and lock the gray things around you before shooting
4. Try not to measure the light on white or black objects, otherwise remember to rece eV for black and increase eV for white<
EV is exposure compensation.
exposure compensation is also an exposure control method, which is commonly used in ± If the ambient light source is dim, the exposure value (such as + 1eV, + 2eV) can be increased to highlight the clarity of the picture
most of the small digital cameras adjust the exposure compensation through the menu
in the process of shooting, if you press half of the shutter, the LCD will display pictures similar to the final effect picture, focusing and exposure will start. The exposure at this time is exactly the exposure of the final picture. If the picture is obviously bright or dark, it means that the automatic metering accuracy of the camera has a large deviation, and the exposure compensation should be enforced, but sometimes the brightness displayed ring shooting is different from the actual shooting result. Digital camera can browse the picture immediately after shooting, at this time, you can more accurately see the brightness of the picture, there will be no difference. If the shooting result is obviously bright or dark, it is necessary to re shoot and force the exposure compensation
the shooting environment is dim, and the brightness needs to be increased. When the flash cannot work, the exposure can be compensated and the exposure can be increased appropriately. For exposure compensation, if the photo is too dark, increase the EV value. Every 1.0 increase in EV value is equivalent to doubling the amount of light intake. If the photo is too bright, decrease the EV value. Every 1.0 decrease in EV value is equivalent to doubling the amount of light intake. The compensation interval can be adjusted in 1 / 2 (0.5) or 1 / 3 (0.3) units according to different cameras
when the white object to be photographed looks gray or not white enough in the photo, it is necessary to increase the exposure. In short, "the whiter the object is, the more white the object is." this seems to run counter to the basic principles and habits of exposure. In fact, it is not. This is because the main body of the camera is often the center of the light measurement, and the White main body will make the camera mistakenly think that the environment is very bright, As a result, the exposure is insufficient, which is also a common problem for most beginners
because the shutter time or aperture size of the camera is limited, it is not always able to reach the 2eV adjustment range, so the exposure compensation is not omnipotent, and it may still be underexposed in too dark environment. At this time, it is necessary to consider cooperating with the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture
generally speaking, the smaller the brightness contrast of the scene, the more accurate the exposure, otherwise, the larger the deviation. The grade of the camera is high and low. If the grade is high, the metering is more accurate, and if the grade is low, the deviation will be increased. If it is a traditional camera, the tolerance of film is relatively large, and the exposure deviation will not have a big problem within a certain range, but the CCD tolerance of digital camera is relatively small, and slight exposure deviation may affect the overall effect
in a word, the adjustment of exposure compensation is determined by experience and sensitivity to color. Users must compare the image quality, clarity, restoration degree and noise size under different exposure compensation to get the best picture
note:
the aperture in Canon's manual refers to the F value. The larger the aperture, the greater the depth of field
generally speaking, aperture refers to aperture, which is inversely proportional to F. the larger the aperture, the smaller the depth of field
AV -- aperture priority auto exposure
TV -- shutter priority auto exposure
AE auto exposure
AF auto focus
AF-S -- single auto focus, the same as saf. The opposite is continuous autofocus
MAF - monitor AF, which can shorten the focusing time. The camera will adjust the focus before half pressing the shutter button, so that you can compose with the adjusted focus. When the shutter button is half pressed and AF locking is completed, the focus will be locked
ev - exposure value, which is usually used in exposure compensation
ISO sensitivity. Each difference of sensitivity is equivalent to the corresponding exposure value of aperture or shutter
brother, if you have time, go to ZhongGuanCun video forum and see the forum.
the price of bitcoin once plummeted to US $48000. There are many reasons for the rise and fall of bitcoin, one of which is the recent capital investment and speculation with the rapid development of Internet economy and network technology, bitcoin, a new open source currency, is born, which is different from traditional virtual currency. Bitcoin has initially formed a relatively complete instrial chain and market, and has become a popular financial investment proct. At the same time, it provides new ideas for the reform of e-commerce payment methods. But the price of bitcoin fluctuates a lot< since its birth, its price has experienced several sharp rises and falls. The main reasons for bitcoin's ups and downs are as follows bitcoin can be easily used in transnational money laundering activities, which has aroused the attention of financial regulators. In theory, if you want to transfer funds from China to the United States, you only need to convert RMB into bitcoin in the exchanges supporting Chinese accounts, and then sell bitcoin in the exchanges supporting U.S. bank accounts and withdraw it< transnational capital transfer is usually subject to strict supervision, and the cost of illegal underground transfer is very high. Bitcoin, as an intermediary, can transfer funds quickly at low cost
On December 17, last year, according to the bitcoin platform cex.io, bitcoin's US dollar quotation broke through the US $20000 mark for the first time, reaching a new record. The quotations of several major bitcoin trading platforms overseas also approached the US $20000 mark at the same time. However, the price of bitcoin fell below US $14000 on December 22 e to the theft of 60000 bitcoins on Ukrainian exchange liqui on December 21 and hacker attacks on some trading platforms
for the current round of decline. Some analysts believe that it is e to South Korea's regulatory policy. On January 11, according to foreign media reports, South Korea's Ministry of justice was preparing legislation to pave the way for the complete closure of domestic exchanges. On January 10, bithumb and coinone, two South Korean exchanges, were raided by the IRS, which was also seen as verifying whether there were tax evasion and financial transactions on the exchanges. On January 8, the chairman of the South Korean Financial Services Commission said at a news conference that he was concting a joint inspection with the South Korean Financial Supervision Institute on six banks providing cryptocurrency account services to verify the anti money laundering regulations previously formulated and the implementation of real name system measures for relevant accounts
I think that the reason behind the sharp rise and fall of bitcoin is that funds are playing games and harvesting funds
bitcoin belongs to the ancestor of blockchain. At present, this concept is still in the research stage and has not been applied . Today, financial giants hold the most bits in the market, so they can easily control the price of bitcoin. From the end of 17, it soared to more than US $20000, and then began a round of sharp decline. Many bitcoin speculators entered the market after the sharp rise and were easily reaped by the big crocodiles
bitcoin is the earliest successful example of blockchain application. From the beginning, it was not worth money to now, it is more than 60000 US dollars. Unlike currency, which can reflect the economic situation of a country, bitcoin itself does not reflect the specific economic situation. Its value reflects the recognition of the market. If it is recognized, the price will be high. If it is not recognized, the price will be low. In the world, some countries admit that they can use it to buy things, while more countries do not
Of course, for such a high price, it also attracts global capital to play games. Therefore, today's market is even more exciting than roller coaster, and fluctuates fast and biginvestment is risky and must be cautious
Bitcoin prices plummeted in the early morning, falling nearly $33 in four hours. The reasons for the decline are as follows:
1 2 3 bitcoin, as an emerging instry, is loved by many people. The financial attributes of bitcoin blockchain can change the future of the Internet, which makes a lot of speculative funds start to speculate compared with bitcoin. After the speculation, they may face great risks. The price of bitcoin plummeted in the early morning, and fell nearly $33 in four hours. The reason for the decline is that the valuation is too high. The market has been panicked. A digital currency can be worth more than 300000 yuan. This is something that many people can't imagine. The key is that such a virtual currency has not been recognized by any government. After the speculation of investment funds, it has been out of business, No one is willing to take over at a high level, which is the main reason for the decline recently, bitcoin led virtual currencies have seen a large-scale rise, which makes a lot of speculative funds make huge profits. At this time, they will sell bitcoin if they want to cash in their profits. If the selling is too big, someone will lower the price, This led to the fall of bitcoin, which led to panic
Why did bitcoin fall sharply when it fell below US $50000? The reason for the sharp drop is that this bitcoin is hyped by others. Once those who hold a large number of bitcoins are ready to cash them out, they will sell these bitcoins. If they appear in the market, the price of bitcoin will continue to fall, so it will fall below $50000, When the supply exceeds the demand, the price will continue to rise. When the supply exceeds the demand, the price will naturally continue to fall. This is very normal{ RRRRR}
generally speaking, all this is a routine made by those who want to make money. First of all, the price will be reced, and then a large number of bitcoin will be proced. They can buy the bitcoin very cheaply, and then they can raise the price, So this is the way they use the hype to make money
Bitcoin, as the first generation of cryptocurrency loved by thousands of investors, once doubled its value in the first half of this year, with an increase of more than 250%, which attracted many investors. However, in recent days, there has been great turbulence in the bitcoin market, and bitcoin has collapsed. In just a few minutes, bitcoin plummeted from US $7900 to US $7500, with an overall decline of more than 10%. It's the lowest price since May. The reason why the price of bitcoin falls like a waterfall is inseparable from its own network performance and changes in the external environment
although bitcoin has reached a new low in the market after the crash, many investors are blindly calling for bottom hunting, but most analysts believe that the risk of bitcoin's subsequent market fluctuation is still great. On the whole, the short momentum is relatively strong, and the banks may still exist under the market. On the value of bitcoin, it may continue to extend downward. From a technical point of view, the short-term trend of bitcoin tends to be bearish. In the long run, if you control your position and wait for a large amount of funds to enter, there may be a reversal
Recently, a & lt; Bitcoin falls below $40000 & quot; The news of, caused the hot discussion of broad netizens, make boiling on the net< so, bitcoin has fallen below $40000. Who is driving the price crash? First of all, the most important thing I think is the boycott of the three major associations. The three associations issued documents to boycott virtual currency, block the channels between banks and virtual currency, and prohibit the recharge of virtual currency. It led to a big drop. Second, musk. Musk has also recently made some comments about bearish bitcoin, which also increases part of the short money. The third is retail investors. Retail investors are a great force in the market. Once collapse occurs, people will stampede and rush out what is the specific situation? Let me share my views with you
First of all, I think the most important thing is the boycott of the three associations. Because Musk's comments led to the rise and fall of virtual currency. The three associations can't stand it any more. They directly started boycotting virtual currency, blocking the exchange channels of RMB and TEDA currency, and other things related to virtual currency{ RRRRR}the above are my views on this issue. They are purely personal views and are for reference only. If you have any different opinions, you can leave a message in the comment area for discussion