标签归档 武汉夜生活论坛

　　　 Source: Beijing News

　　When I went back to my hometown to squeeze the train for the New Year, Xiaoxi’s digital camera was squeezed out. After returning to Beijing, the first thing Xiaoxi will do is to buy a digital camera.

　　Ten million pixel price reduction

　　After the pixel upgrade competition in 2006, the mainstream configuration of home digital cameras has now risen to the level of 8 million pixels. Many people in the industry have analyzed that in 2007, the mainstream products of mainstream brands must be configured with 10 million pixels as the standard, although there are not many types of cameras at this level at present.

　　Xiaoxi came to Zhongguancun Computer City and found that the tens of millions of pixel products of mainstream brands such as Olympus, Sony and Canon were placed in an eye-catching position. Judging from the scene in Shoot, the picture taken by the 10-megapixel camera has a strong sense of hierarchy, and it can perfectly capture every detail, and the pores on Xiaoxi’s face can almost be reflected after enlargement. A recently launched product μ1000 of Olympus uses a stainless steel body, which can achieve one-button correction before and after shooting, namely anti-shake, red-eye prevention and exposure compensation. The image shot with tens of millions of pixels is not only suitable for the printing of large-size photos such as A3 specifications, but also can get the image quality of millions of pixels even if one person’s image in group photography is enlarged, which is very convenient for image editing and printing.

　　Using the "fine zoom mode", you can take out 3 million pixels from the central part of a 10-million-pixel image and take photos equivalent to 5 times zoom while keeping the optical performance unchanged.

　　Xiaoxi found that some mainstream camera manufacturers have also introduced functions such as shockproof, anti-fall and waterproof. If the camera falls from a height of one or two meters, it will not be damaged, and if it accidentally falls into the water, it will not affect its use. Unfortunately, no business is willing to give Xiaoxi a similar demonstration on the spot. Are these slogans wet?

　　Because powerful household digital cameras such as μ1000 can perform high-speed continuous shooting at 3.6 frames per second, and a 1.8-inch CCD with 10 million pixels is arranged in the fuselage, these products have the characteristics of digital SLR cameras to some extent, and even have other advantages in appearance and image quality. "In the future, it will definitely be a competitor of SLR cameras, and now the price is not expensive." A merchant recommended it to Xiaoyan. It is understood that the price of the mainstream 10-megapixel camera is basically between 2,500 yuan and 3,500 yuan, which has not greatly widened the gap with ordinary cameras because of the improvement of pixels.

　　However, in the most popular stores such as Hailong and Dinghao, Xiaoxi found that the sales volume of ten million pixels is still much worse than that of five or six million pixels. Because the price difference is around 500 yuan, many consumers will choose the latter after comparison. In Dinghao, an Olympus camera salesman told Xiaoxi that consumers have basically become rational and will not blindly believe the hype of businesses. Besides, improving the imaging quality of digital cameras is a comprehensive system, and it is not enough to simply improve pixels. The core components such as lenses and image processors also play a vital role in the imaging of digital cameras.

　　Select pixels according to requirements.

　　"I think it is a waste to buy a digital camera with 10 million pixels. I usually just take photos of my life. It is enough to have a four-or five-megapixel camera." "There is no need to simply spend money on pixel improvement." I asked some friends at random, and Xiaoxi got this answer.

　　Indeed, for the average family, a camera with three or four million pixels is enough. Unless it is used to print large photos, the pixel is too large, and the storage capacity derived from photos will take up a lot of space. Xiaoxi tested it on the spot, and the maximum resolution of a photo taken by Sony DSC-N2 actually reached tens of megabytes, which is really tricky for home users whose storage format is still difficult to keep up with. What’s more, Xiaoxi learned that most computer users don’t use picture viewing software such as ACDSEE to change the format in order to reduce the photo capacity. In this case, it is very difficult to send the taken photos to friends under the current bandwidth and network speed.

　　Although the main benefit brought by high pixels is the improvement of picture expression, for non-professionals, such subtle differences are of little significance, which is why Xiaoxi found that the market is uneven in the hot and cold of 10-megapixel cameras. However, the benefits of ten million pixels are also obvious-the expressive force of details is much stronger than that of previous products, especially when shooting flowers, animals and children, the shocking effect and real texture brought by ten million pixels are much higher than six or seven million pixels. In addition, in the post-production of pictures, high-pixel photos can also play an advantage in cutting, exposure and color temperature adjustment, bringing more creative space to users.

　　Generally speaking, digital cameras with 10 million pixels are gradually becoming popular in the market, and it is still unknown whether the competition of camera pixels will be like the battle of LCD milliseconds. However, Xiaoxi believes that we should do what we can and don’t blindly compare. Our reporter Jiao Ji?

　　Xiaoxi warm reminder

　　Pay attention to the corresponding accessories configuration.

　　Xiao Yan found that many 10-megapixel brands have adopted professional lenses such as Schneider and Carl Zeiss, and memory cards have at least 1G storage capacity as standard. Technicians said that the improvement of digital cameras is not only reflected in the pixel upgrade, but also the improvement of image processing technology, LCD technology, battery technology and lens technology.

　　In the accessories market, Xiaoxi found that the price of 1G SD memory cards has basically dropped below that of 200 yuan, and 2G or even 4G memory cards have quietly appeared on the counters of the electronic market. On the other hand, the battery is a mixed bag, with a variety of brands, and the price has a gap of one or two hundred yuan.

　　After asking several companies for quotations, just as Xiaoxi was about to go back to the one with the lowest initial price, she was told by the clerk that she was "not for sale", and other relatively cheap bidders would prevaricate with reasons such as "out of stock". Merchants often have to add a few percentage points of invoice money. Even so, standard batteries and memory cards have to be bought separately. After trying to sell only "bare metal", Xiaoxi really wants to suggest that these businesses should also remove the shutter, lens or LCD screen and sell it for money.

　　According to people in the industry, there is a hidden danger in some 10-megapixel cameras that the pixels per inch is too high, which will increase the mutual electronic interference between pixel lattices in CCD. The problem reflected in photos is that noise and color spots are more difficult to control. Pay attention to this when purchasing.

Editor: Li Erqing

People’s Daily Online, Beijing, November 1 (Reporter Yang Lei) On October 31, the 2023 FISU Football World Cup ended in Jinjiang, Fujian. Beijing Normal University beat paulista University of Brazil in the women’s final and won the championship, while paulista University men’s soccer team won the men’s championship.

On the afternoon of October 31st, the battle for the women’s championship of the 2023 FIFA World Cup in Jinjiang was held at the training ground of Jinjiang Football Center. The team of Beijing Normal University, which represented China, played against the team of paulista University in Brazil, and the two sides fought for 120 minutes and drew 2:2. In the final penalty shootout, Beijing Normal University won the championship with a total score of 7:6.

"Today, we made full preparations for playing for 120 minutes and presented a very wonderful game to everyone. It is our honor to stand on the highest podium again after 12 years. " Bi Yan, former China international and head coach of Beijing Normal University, said after the game.

At the 2011 Shenzhen Universiade, Bi Yan helped the Beijing Normal University women’s football team win the championship by beating the Japanese team 2-1. Twelve years later, as the head coach, she led the team to the highest podium in the world college football again.

In the men’s final, paulista University of Brazil beat the Ukrainian National University of Economics and Business men’s soccer team 7-6 in a penalty shootout and won the championship. Hohai University’s men’s soccer team, representing China, created the best result of China University’s men’s soccer team in the FIBA World Cup, and finally won the eighth place.

　　Swelling is called edema in medical terminology, which is more common in the ankle. Many people think that ankle swelling is caused by drinking too much water, but it is not. The website of American Journal of Prevention recently analyzed this and summarized 12 reasons for ankle swelling. Swelling If left untreated, swollen ankles will become painful, it will be difficult to walk, the joints will be stiff and the skin will be elongated. Even worse, swelling or blood clots, infections, and even signs of heart problems.

　　Sit or stand all day: If your work requires standing (or sitting) in one place for a long time, then ankle swelling is a natural phenomenon. Dr Steven winfield, director of the Department of Foot and Ankle Surgery at Mount Sinai Hospital in new york, explained: When you move around, the muscles involved in exercise help you to import body fluids and blood into and out of your limbs. However, without the help of muscles in motion, blood and body fluids will gather in the feet and ankles.

　　Side effects of pregnancy: among the many changes experienced by pregnant women during pregnancy, ankle swelling may be the most common. According to the American Pregnancy Association, this is mainly because the extra blood and body fluids produced by women during pregnancy soften the body and help it expand as the baby grows. Changes in hormone function and extra pressure in veins may also cause ankle swelling during pregnancy.

　　Injury: Whether you hit a table or sprained your ankle while running, injury is a common cause of ankle swelling. When the ankle is injured, the body will send extra blood to this area; This will not only bring healing cells, but also cause swelling, thus keeping the injured joint still. In the case of injury, swelling may also be accompanied by redness or bruising.

　　Infection is brewing: although untreated wounds around the ankle joint will infect the inside of the joint, any bacteria that enter the blood may eventually enter the joint. The most obvious signs of infection are swelling, tenderness, fever and redness.

　　Infants and the elderly are particularly prone to suppurative arthritis, that is, bacterial or fungal infection leads to joint inflammation, accompanied by redness, pain and fever. In addition, some skin diseases (such as cellulitis, a rapidly spreading bacterial infection, which makes the skin appear red and blistered) can also cause swelling of the ankle, because it often appears in the lower leg of adults.

　　Lymphedema: Lymphatic system transports lymph (including white blood cells and waste) to the whole body. However, for patients with lymphedema, their lymphatic system is damaged or blocked, resulting in lymph deposition at the distal end of the limb. Although some cancers (and cancer treatments) can cause lymphedema, infection can also stimulate swelling. Symptoms of lymphedema also include heavy or tight arms or legs, inability to move normally, repeated infections, skin hardening or thickening, and difficulty sleeping.

　　Weight gain: Overweight and obese people have swollen ankles for two reasons. First of all, the extra weight applied around the joint will cause fluid retention around the joint. In addition, excessive hormone storage in excess fat cells will also lead to changes in hormone function, resulting in fluid retention.

　　Taking certain drugs: Due to the complex interaction between drugs (including over-the-counter drugs) and the body, they may cause ankle swelling. Some drugs can cause fluid retention. Some drugs for treating blood pressure, anti-inflammatory steroids and even non-steroidal anti-inflammatory drugs (such as ibuprofen) have such side effects. Estrogen and some antidepressants can also cause ankle swelling.

　　Arthritis: Symptoms of arthritis include joint swelling, pain, stiffness and difficulty in moving. This disease is very common in the elderly and will affect all joints of the body, including the ankle. Inflammation associated with arthritis causes joint swelling.

　　Signs of blood clots: One of the most shocking causes of swelling around the ankle is blood clots (which usually spread further up the leg). If the swelling on one side continues to spread upward, it needs to be checked in time. In some cases, blood clots can enter the lungs and lead to life-threatening pulmonary embolism. If you notice other signs of thrombosis (such as pain, shortness of breath, dizziness, redness or discoloration of the skin), you should see the emergency department immediately.

　　Intravenous work is inefficient: venous dysfunction will affect blood circulation back to the heart, allowing blood to collect on the feet and ankles. With the passage of time, the stretching function of the one-way valve of vein becomes worse, which leads to liquid leakage. This happens when the valve is damaged or weakened due to aging or sedentary, which is more common in middle-aged and elderly women over 50 years old.

　　It may also be a symptom of heart problems: patients with congestive heart failure (caused by coronary heart disease or hypertension) have at least one ventricle that cannot pump blood normally. If the heart can’t pump enough fluid, the fluid will flow back. This usually happens in the feet and ankles, causing swelling. In more serious cases, it can extend up to the legs. Other symptoms of heart failure include shortness of breath or irregular heartbeat, persistent cough and chest pain.

　　There are liver or kidney problems: kidney and liver dysfunction will affect the content of body fluids, causing fluid retention and swelling of ankle joints. In the case of kidney damage or nephropathy, the kidney either leaves too much fluid and sodium, or there is not enough protein in the blood, which will lead to fluid accumulation in the lower limbs. When renal failure occurs, swelling and tenderness will affect the whole leg below the knee. Liver disease also involves a low level of protein in the blood, resulting in fluid leakage and swelling of the lower limbs.

　　Compile/Guo Shaoshan