Bitcoin is only $8000 a year
On March 12, 2021, bitcoin broke $58000 again, more than 90000 people burst their positions by 4.3 billion yuan in one day
On March 1, bitcoin fell back to US $43000, but it rebounded again e to the recent entry of several Wall Street billionaires. However, according to the statistics of bitcoin home, there were more than 91000 people and more than 4.3 billion yuan in the past 24 hours. About 6:00 to 7:00 on the 12th, nearly 159 million yuan of funds were burst{rrrrrrr}
extended data
the surge of bitcoin may aggravate the shortage of chips
some people think that because "mining" equipment needs long-term high load operation, its life is generally short, but with the surge of bitcoin, many people will continue to increase the investment in "mining", This will further aggravate the current global chip shortage, and even eventually lead to a large shortage of cars, computers, mobile phones and other procts, and a surge in prices
to know bitcoin, you must think about it at the national level. Why does Japan support bitcoin? What can it get by supporting bitcoin? Why is the United States silent about bitcoin and what is the benefit of bitcoin development to the United States? Why does China ban bitcoin exchanges instead of mining? What are the benefits
in North Korea, they are working hard to earn bitcoin for us dollars. Venezuela, which has been crippled, has graally come to understand that its way of doing business is still straight up, and it is also engaged in oil bitcoin, which is immediately attacked by American public opinion
in short, all the slogans in the world are to cover up their greedy interests. All the slogans on bitcoin are a fart, covering up the fact that the United States and Japan suck stars, suck blood and suck inside < br />
the rise and fall of bitcoin is determined by the funds flowing into the bitcoin market. If more people buy bitcoin, the price will rise quickly. If less people buy bitcoin, the price will fall according to media reports, ring this period of time, the bitcoin market has once again ushered in a sharp rise, and the price once exceeded the $58000 price, which aroused the sentiment of many bitcoin investors. In fact, the rise of bitcoin is mainly e to the news that the Federal Reserve said that monetary policy will not be tightened. Affected by the news, the stock market ushered in a rebound. After the stock market rose, it was bitcoin's turn to rise. Therefore, the change of bitcoin price completely depends on whether the market liquidity is sufficient, which will naturally rise
stop loss after the end of February 2020, the bitcoin market will graally form a symmetrical triangle. This is a common finishing form in technical analysis. The upper limit is downward inclined line and the lower limit is upward inclined line if the price goes up and breaks through the resistance line, it is a bullish signal; On the contrary, if the price falls below the support line, it is a bearish signal. After the price of bitcoin broke through the support line at the end of February, it actually indicated that the bitcoin market entered a downward trend at present, bitcoin has entered the downward channel. If bitcoin investors still hold the expectation that "half market price will bring bitcoin price rise", they will face greater market risk in the future and should stop loss in time extended data: bitcoin generation: in addition to packaging the received transaction information into data blocks, each data block will be allowed to issue a certain number of new bitcoins to motivate the miners who successfully discover data blocks. The bitcoin system determines the number of bitcoins to be issued according to the predetermined rhythm of additional currency issuance. If there is a service charge for other payment transactions, the miner will also receive a service charge since the miner can decide whether to package a transaction data into a data block, the miner may give priority to the transaction with higher handling charge. The block generation rate is expected to be one every 10 minutes, but the number of new bitcoins issued in each block cannot exceed 50, and this number will be halved every four years, so the total number of bitcoins will not exceed 21 million with the decline of the number of new bitcoin issues, handling charges will become the main motivation for mining. And that number is halved every four years. Users who put their computer resources into bitcoin mining activities in the earlier period are much easier to get bitcoin than miners who joined later the main reason for this design is to ensure that in the early development stage of bitcoin, enough computing power can be attracted to process data blocks. In fact, if no one digs, the initial trading activities of bitcoin will not be handled, and the bitcoin economy will stop in December 2012, the number of bitcoins was halved for the first time, which should be around July 16, 2016. At present, more than 15 million bitcoins have been g up. Because the total amount of bitcoin is limited, and the loss in circulation, bitcoin is a deflationary currency, and the current global market price is about 4.5 billion US dollars as for the fixed total amount, bitcoin has a lot of room for appreciation. If everyone uses bitcoin, the consequences can be imagined simply speaking, the generation of bitcoin is that the designer uses the concept of human digging for gold, uses a specific algorithm, calculates through the computing power of the computer, and obtains bitcoin. This method is also called "mining" on the Internet in order to maintain the normal operation of the system permanently, "miner" will also receive a certain amount of handling fee when receiving the transaction confirmation information, and "miner" can also freely choose the transaction with high transaction fee to package. At present, the global computing power has reached 1000p
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.
in the future, it will be more strict and can be fried in the short term, but the risk is high
some people say that this is the result of other people's manipulation, but in my opinion, few people can directly control the bitcoin market
for those small partners who like to invest, they should often hear conspiracy theories. For example, a slump is the result of someone else's manipulation, and every surge is the result of someone else's pull-up. I think this idea is untenable, because the market of bitcoin can't be controlled by an indivial, This is a comprehensive reflection of the global economy
bitcoin plummeted $8000 an hour US $8000 is not a small number, because we know that bitcoin's current market is about US $50000. For those small partners who take over bitcoin at a high level, US $8000 means a withdrawal of almost 20%. This range is hard for many normal investors to accept, and many small partners with poor psychological quality are very scared{ RRRRR}
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