The application of camera exposure
There were many applications for camera exposure in photography: * * 1. Affects the image quality and effect ** 1. * * Correct exposure to ensure image quality ** - The correct exposure was the basis for a high-quality image. In photography, the amount of exposure was directly related to the clarity of the image. If the exposure was correct, the sensor could accurately record the brightness, color, and other information of the scene, so that the photo had rich layers, clear details, and accurate color reproduction. - For example, when taking landscape photos, the appropriate exposure could make the sky, mountains, trees, and other parts appear accurately. It would not lose the details of the highlight parts due to overexposed (such as the sky becoming white and the details of the clouds disappearing), and it would not lose the details of the dark parts due to insufficient exposure (such as the trees in the shadows becoming black and the trunk and leaves could not be distinguished). 2. * * The artistic effects of overexposed and under-exposed ** - Sometimes, for the sake of artistic expression, one could deliberately overexpose or under-expose the photos. For example, when shooting some abstract or dreamy scenes, appropriate overexposed could create a bright and ethereal atmosphere, while underexposed could be used when shooting low-key portraits or mysterious scenes, emphasizing the main body or creating a specific emotional atmosphere by letting part of the scene be in the dark. However, even if it was for the sake of artistic effect, it was necessary to control the degree of exposure to ensure that it did not affect the theme and instead added points to the theme. * * 2. Cooperate with photography techniques ** 1. * * Relationship with light sensitivity, aperture, shutter speed ** - The sensitivity, aperture, and shutter speed worked together to control the camera's exposure. When the sensitivity was fixed, the aperture size and shutter speed restricted each other to achieve the same amount of exposure. For example, if the aperture was opened one level (the amount of light entering was doubled), to maintain the same exposure, the shutter speed needed to be reduced by one level (the exposure time became half of the original). This relationship was known as the "reciprocation rate." - In actual shooting, this relationship could be used to achieve different shooting effects. For example, when shooting a moving object, if you want to freeze the moment's movement, you need to increase the shutter speed. However, in order to ensure the same exposure, you may need to increase the aperture or increase the sensitivity accordingly. When shooting a landscape that requires a large depth of field, you can reduce the aperture and adjust the shutter speed according to the "reciprocation rate" to obtain the correct exposure. 2. * * Control of exposure in different shooting modes ** - * * Automatic mode (Automatic)**: The camera controls the exposure. The camera will analyze the scene according to its own light measurement system, and automatically adjust the sensitivity, aperture, shutter speed, and other parameters to obtain the appropriate exposure. This mode is suitable for beginners or for quick shooting in emergency situations, but it may not meet special creative needs. - * * Sequential exposure mode (P)**: Although the camera controls most of the parameters, the user can choose from a set of parameters given by the camera. For example, the camera might give a combination of f/5.6 aperture and 1/125s shutter speed, or another combination of f/8.0 aperture and 1/60s shutter speed. The user could choose according to their initial requirements for depth of field or motion blur. - * * Aperture priority mode (Av)**: The user controls the aperture size and exposure compensation, and the camera will automatically adjust the shutter speed according to the aperture value set by the user to achieve the appropriate exposure. This mode was very useful when shooting portraits, because the depth of field could be controlled by adjusting the aperture, making the character clear and the background blurred, and the main subject prominent. - * * Shutter priority mode (Tv)**: The user controls the shutter speed and exposure compensation. The camera will adjust the aperture size according to the set shutter speed to obtain the correct exposure. For example, when shooting sports events, the photographer could set a fast shutter speed to freeze the movements of the athletes, and then the camera would automatically adjust the aperture. - * * Manual Mode (M)**: User controls the sensitivity, aperture, shutter speed, and other parameters. It was suitable for experienced photographers. They could accurately control the exposure according to their creativity and understanding of the scene to achieve some special effects, such as deliberately overexposing or underexposing. * * 3. Connection with Photmeter Mode ** 1. * * Determination of exposure under different measuring modes ** - * * Rating: The camera will divide the image into several areas for measurement. It is suitable for scenes with relatively uniform light, such as most scenery scenes. The camera calculated a suitable exposure value based on the light conditions of each area to ensure that the exposure of the entire picture was relatively uniform. - * * Central Average Metering **: Metering method with the central area as the main weight. It is suitable for subjects with a clear main body in the center of the picture, such as portraits, racing cars, etc. The camera would focus on the light in the center of the picture to determine the exposure. At the same time, it would also take into account the light in other areas of the picture to make the overall exposure more balanced. - * * Local Metering and Spot Metering **: These two methods only measure light in a specific small area (such as the circle in the picture). They are more suitable for high-light environments, such as backlighting portraits or shooting artifacts. In this case, the photographer could accurately measure the light of the subject to avoid inaccurate exposure of the subject (such as the face in the backlit portrait being too dark or the exhibit being overexposed). - * * Average Metering **: Average the image exposure information on the entire screen to determine the exposure. It is more suitable for outdoor or landscape shooting. It could give the whole picture a relatively average exposure effect, but it might not be accurate in the case of complicated lighting or a large ratio of the main body to the background light. - * * Strong Light Metering (Some cameras have it)**: Focus on the bright areas of the screen to ensure that this part will not be overexposed. When shooting scenes with strong light sources or high-light areas, it could ensure that the details of the high-light parts were preserved. * * 4. Relationship in the retouching of the map ** 1. * * Post-production exposure adjustment ** - During the retouching process, the exposure could also be adjusted. However, when adjusting, you need to refer to the exposure of the main body in the picture, and pay attention to avoid the situation of blooming (the brightest part of the picture becomes white and loses details) and the dark part is dead black (the darkest part of the picture becomes black and has no details). The specific adjustments were based on the specific content of the picture and the desired effect. It required constant practice and reference to other people's works to grasp the degree of adjustment. Read more exciting novels for free
The teacups are built
Jianzhan was a specialty of Jianyang District, Nanping City, Fujian Province. It was a product of China's national geographical indication, specifically referring to the black glazed porcelain teacups in ancient kiln sites and the black glazed porcelain teacups in today's Jianyang area. It was a traditional Chinese porcelain, the main representative of black porcelain, one of the eight famous porcelains of the Song Dynasty, and enjoyed the reputation of "the pearl of the porcelain altar". Jianzhan was created at the end of the Five Dynasties. It was popular during the Song Dynasty because of the tea competition. At that time, it was a tea set used by the royal family and was called "the only tea ware born for tea" by the tea industry. During the Yuan and Ming Dynasties, the tea drinking style declined due to the change. In modern times, as the country's cultural confidence increased, people began to like Jianzhan again. In the 1980s, the antique Jianzhan was successfully developed and revived. The shape of the cup is simple, the shape is steady, the hand feels heavy, and the heat preservation and insulation are good. It can be divided into six types of glaze: rabbit hair, oil drop, partridges, black gold, bright change, and variegated glaze. From the shape, it can be divided into four types: open mouth, skimming mouth, converging mouth, and beam mouth. It also has a small number of high-foot cups, lamps, jars, bottles, etc. The firing process of the cup was more complicated. For example, the glaze process. Although the glaze water was just a simple mixture of plant ash and ore, different proportions would make the firing result completely different. After the kiln was installed, the firing had to continue for two days and two nights without interruption, and the control of the fire after 1000 degrees was the most important thing to fire the best. When choosing a Jianzhan, one could consider the place of origin, the maker, and so on. Jianyang was the place where Jianzhan was produced. The red soil of Shuiji here had an iron content of about 8%. This was an important source of Jianzhan's iron body, so one could choose a merchant based on the place of production. You could also choose the works of more famous masters in the Jianzhan circle, such as Sun Jianxing, Xu Jiayou, Li Da, etc. Master works usually had an inscription at the bottom, and some even had a collection certificate. These kinds of works were mostly handmade and more expensive. One could also choose a method similar to betting on luck. There were kiln betting modes on Taobao crowdfunding, Jingdong crowdfunding, Dongjia, Netease crowdfunding, and other platforms. They could participate at a lower price. Each biscuit had a serial number. If one was lucky, they could get a high-quality cup. If one was unlucky, they might be defective, but defective products would usually compensate for other construction cups. Most Jianzhan (unless the price was clearly stated, bargaining was not allowed) could be negotiated appropriately. The novel, Drunken Golden Cup, is equally exciting. Everyone is welcome to click and read it!
God and Ghost
The godly couple referred to the duo of Wu Xuanyi and Wang Linkai. In the beginning, Wu Xuanyi thought that Wang Linkai, who had just debuted, was a very stupid child. As they got along in " The Newbie Arrives," her view of Wang Linkai changed from " stupid child " to " simple child." After they got together on the finale day, Wang Linkai posted something on Weibo that was easy to notice. Wu Xuanyi felt the happiness of being treated foolishly by others. Wu Xuanyi used to think that self-destructing was a lack of professionalism and an idol's disqualification, but because of Wang Linkai, she wanted to be a girl who only belonged to him for once, and even write love songs like a person in love. However, Wu Xuanyi was worried that she would not be able to give Wang Linkai, who used love as a source of inspiration. She also thought that she was not as bright, innocent, and sweet as she appeared to be. She had a strong personality. When she fell in love with Wang Linkai, she did not dare to be herself. She was afraid that her stubbornness and wolf nature would make Wang Linkai leave. Wang Linkai was more sentimental. He would act coquettishly to Yu Shuxin, comfort her, and laugh. This made Wu Xuanyi jealous but did not dare to show it. She could only secretly suffer. While waiting for the TV series, he could also read the exciting content related to this site!
Which birthday characters can't be worn with jade?
From a scientific point of view, there was no birth characters that could not be worn with jade. There was no direct connection between birth characters and jade. Although there were some sayings in traditional China culture that the two were related, such as some people felt that jade would "consume" people's spirit and should not be worn when their luck was low, and there was also the so-called selection of suitable jade according to the eight characters of the birth date. However, these were more based on some concepts in traditional culture and lacked scientific evidence. A person's destiny was the result of a combination of many factors, and the influence of jade on people was mainly psychological. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Bruce was slow to react when he finished with a flat car
If Bruce's reaction was slow at the end, it could be due to the following reasons: - In terms of tension and line, it is necessary to check whether the flat car line is normal to ensure that there is no excessive tension or line slack. It is also necessary to check whether the sensitivity of the wire break sensor is correct so that the wire break can be detected in time. Finally, the problem of slow response can be improved by adjusting the tension and line. The adjustment method may be different for different types of flat cars. Before adjustment, you must read the instructions and operate according to the steps. - The position of the equipment parts: The slow response of the flat car finishing may be due to the wrong distance between the wheel shaft and the roller, or the flat car shell is not flat enough, or the position of the wire feeding gear is incorrect. The position of the wheel shaft, flat car shell and wire feeding gear needs to be adjusted. - Needle pitch: If the needle pitch of the sewing machine is too small, it may cause the reaction of the flat car to be slow. You can adjust the needle pitch knob of the sewing machine to increase the needle pitch. - In terms of cloth feed teeth, the sewing machine's cloth feed teeth were too low, or the sewing machine's cloth feed teeth were seriously worn out. Slightly raise the feed dog, adjust the height to the highest position, the feed dog exposed needle plate height of 0.8mm, if the feed dog wear is serious, need to replace the new feed dog. - As for the motor, the slow speed of the motor will result in the slow reaction of the flat car. Check whether the motor belt is too small. If the belt is too small, replace it with a larger belt (Take the single-needle flat car as an example. The size of the sewing machine motor belt is generally 60 - 80mm). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
With you, the beautiful star list
The cast list for " You are prettier than the stars " was as follows: Tan Songyun as Ji Xing, Xu Kai as Han Ting, He Ruixian as Su Li, Gao Han as Shao Yichen, Wang Yilan as Tu Xiaomeng, and so on. There were a total of 182 actors.
Turn on the lights of the night
Light up the lamp in the dark night. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Which novel character's name is Lin Xiaobai?
Lin Xiaobai could be the name of many characters in novels. In one of the novels, Lin Xiaobai was a little hamster in the late apocalypse. After being bitten by a zombie while looking for supplies, she became a mischievous sister-in-law in the novels. In another novel, Lin Xiaobai wanted to embrace youth in Dongyue City, where her thoughts were still immature and information was not developed yet. She wanted to hold the hand of a girl she loved and run to 2024. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Tour the national treasures and cultural relics
I don't quite understand the exact meaning of "touring national treasures and cultural relics". If you want to ask which national treasures and cultural relics there are, you can list some of them, such as the Yellow River Iron Bull, the late Qing Dynasty Jade Pear, Ma Chao Dragon Sparrow (horse stepping on the swallow), Zeng Houyi's chime bell, etc. If you want to ask about the content related to visiting national treasures and cultural relics, such as the location of visiting national treasures and cultural relics, different national treasures and cultural relics are collected in different museum, such as Ma Chao Dragon Sparrow now in Gansu Province Museum, Zeng Houyi Chime Bell may be exhibited in relevant historical and cultural exhibition halls, etc., you can go to these museum to visit national treasures and cultural relics. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What is the name of the female protagonist in the author's novel?
The novels that Jiang Shan had written included " Dressed as a Duty-husband's Male Lead's Ex-wife," with the female protagonist's name being Su Wen, and " Dressed as a Green Tea to the Eighties and Becoming a New Person," but the female protagonist's name was not found. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How much does Pengding Holding Group earn in a month?
The salary of Pengding Holding's general workers was as follows: - Base salary 2100 + 400 allowance + overtime pay + night shift allowance + performance bonus (0 - 300 after becoming a full-time employee), comprehensive income of about 4600 - 5200. - There was also a salary calculation method of 2300 base salary + 400 allowance + overtime pay + night shift allowance + performance bonus + full attendance bonus. The comprehensive income was around 4500 - 5800. - In addition, there was also a production incentive award of 500 - 1400 yuan. - Overtime pay was calculated according to the labor law. It was 1.5 times during normal times (18.10 yuan/hour based on the basic salary of 2100 yuan), twice on weekends (24.13 yuan/hour), and three times on holidays (36.20 yuan/hour). "The Legend of Pengcheng" is equally exciting. Everyone is welcome to click and read it!