Calculating the Magnification of Industrial Lenses
In industrial lenses, optical magnification usually refers to the vertical axis magnification, which is the ratio of the size of the image to the object. The calculation method is: optical magnification = y'/y = camera chip size/field of view. For example, the known camera chip was 2/3 inches (8.8mm*6.6mm), and the field of view was 10mm * 8mm. If the long side is used for calculation, the magnifying power = 8.8mm/10mm = 0.88x; if the short side is used for calculation, the magnifying power = 6.6mm/8mm = 0.825x; at this time, the smaller magnifying power of 0.825x should be used as the optical magnifying power of the lens to be selected. Otherwise, the short-side field of view cannot meet the requirements (if 0.88x is used, the short-side field of view = 6.6mm/0.88x = 7.5mm<8mm). In actual projects, if the field of view was close to a square or a circle, the short side would be used for calculation; if the field of view was a long strip, the long side would be used for calculation. Read more exciting novels for free
The Technique of Magnification
The magnifying power of the lens was an important indicator of the lens 'ability to take close-up shots. It was also a hard standard to determine whether the lens was a macro lens. The following were some techniques related to the magnifying power of the lens: ** 1. Based on focal length and closest focusing distance ** 1. ** When the focal length is fixed ** - When the focal length of the lens remained the same, the shorter the focal distance, the stronger the lens 'magnifying ability and the higher the magnifying power. For example, when using a fixed-focus lens, if the closest focusing distance of the lens was short, the object could be shot at a closer distance, thereby obtaining a relatively larger image on the sensor and increasing the magnification. 2. ** When the closest focusing distance is fixed ** - When the closest focal distance of the lens was the same, the longer the focal length, the stronger the magnifying ability of the lens. This was because a long focal length could make distant objects appear larger on the sensor, and it also helped to increase the magnification when taking close-up shots. 3. ** When the focal length and the closest focal distance are different ** - At this time, it needed to be judged according to the definition of the magnifying power, which was the ratio of the image formed on the sensor to the original object. In actual operation, the zooming ratio could be adjusted according to the shooting needs by selecting a lens combination with different focal lengths and the closest focusing distance. ** 2. Consider the camera frame factor ** 1. ** Full-frame camera and macro lens ** - For full-frame cameras and 1:1 macro lenses, it was possible to fill the entire frame with objects that were the same size as the full-frame sensor (or larger). If you want to shoot an object smaller than the full-frame sensor size (36mm x 24mm), you can use a lens with a higher magnification or a camera with a smaller sensor size. 2. ** Magnification Rate ** - Magnification and focal length were equivalent. The equivalent magnification was equal to the lens 'magnification multiplied by the camera's equivalent factor. When switching lenses between different frame cameras, one needed to consider the equivalent magnification to accurately estimate the shooting effect. ** 3. Choice of lenses with different magnifying powers ** 1. ** Professional macro lens ** - Professional macro lenses usually had a magnification of not less than 1:1 (1.0 times). This lens was suitable for shooting macro objects that required high magnification, such as insects, the fine structure of flowers, and so on. 2. ** Small macro lens ** - The "small macro" lens also had to have a magnification of not less than 1:3 (0.33 times). It was suitable for shooting scenes that did not require particularly high magnification but still required a certain amount of close-up ability. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What does lens magnification mean?
The lens magnification included zooming and magnifying. The zooming ratio refers to the change in the focal range when using the zooming lens to form an image. The principle was based on the zooming lens. The wide-angle end could expand the shooting range, and the telephoto end could enlarge the subject. The photographer could change the shooting range without moving. The camera's product manual would indicate the value. The higher the zooming ratio, the larger the focal area of the wide-angle end and the telephoto end. There were more ways to use it. Magnification is the performance parameters of an optical lens. It refers to the ratio of the image size of an object on the focal plane through the lens to the actual size of the object. The camera lens would be labeled as "maximum magnification", which referred to the lens 'maximum focal length (the focal length of the fixed-focus head was constant) and the closest shooting distance for clear imaging. For example, if the length of the object was 10mm, and the image on the film was 10mm, the lens magnification would be 1:1, the image would be 5mm, it would be 1:2, and the image would be 2mm, it would be 1:5. The macro lens was specially used to shoot small objects. Its magnification could usually reach 1:1, which could completely fill the image of the object being shot and clearly show the details and shape. At the same time, in the field of optical science, the magnifying power was one of the important indicators to evaluate the imaging ability and imaging effect of the lens. It was determined by the focal length of the lens and the closest focusing distance. In macro photography, the closest focusing distance usually determined the maximum magnifying power that the lens could achieve. In addition, the magnifying power was also an indicator of the camera viewfinder. If the magnifying power was large, the visual angle would be small, and the scenery seen during framing would be close to the original, giving a strong sense of realism. If the magnifying power was small, the visual angle would be large, and it would be easy to see the panoramic view during framing. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Price of Calculating
I recommend Super Actuary, a virtual online game novel written by Yi Cheng. QQ. The protagonist was an actuary. After getting tired of the business world, he entered the game " Warcraft Heroes " and made a name for himself with his calculation and analysis skills. It was just a fantasy novel, and he was very cautious. You can enter the high-level group. Genius was a modern cultivation novel about a wandering dragon. Ji Xiaotian's computing ability was extremely strong, and he was extremely good when it came to martial arts. The main character was very tough, and when he was wronged, he would attack. He did not pretend to be a b * tch, and was very straightforward. " Mei Man: Starting from the Twelve Charms " was a novel by Wen Xin Zhai Mo. Ryan Lott unlocked the 12 charms in the American comic world, the nonsensical invincible style, and the non-hybrid world view. "Who cares about childhood sweethearts when you can cultivate?" It was a Xianxia and Cultivation novel written by Lin Zhudao. After Xu Ji transmigrated, he ignored his childhood sweetheart and displayed his super strength in the Immortal Alliance Competition. Divination, Xiao Se Liang's urban supernatural novel. The rich second-generation Cheng Yu was forced by the system to save money to extend his life. The theme was novel, light and humorous. It was the opposite of Black Card. It was very creative and could be read. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Calculating the Years
The order of the years was according to "Jiazi, Yichou, Bingyin, Dingmao…Renxu, Guihai". The beginning of the year was marked by the beginning of spring. All the months and days before the beginning of spring were under the jurisdiction of the previous year, and all the months and days after the beginning of spring were under the jurisdiction of the next year. The novel " Gilded Palm " is equally exciting. Everyone is welcome to click and read it!
What makes a funny magnification lens cartoon appealing?
The appeal of a funny magnification lens cartoon lies in its ability to surprise and amuse. The strange and funny shapes and perspectives it shows can brighten up our day and give us a good laugh.
How to convert the camera lens magnification of the mobile phone
The conversion of the phone's lens magnification was related to the focal length. Using the focal length of 35mm film as a conversion reference, for example, 5x zooming was equivalent to 120, and 10x zooming was equivalent to 240. On a mobile phone, 1x meant 1x focal length, which was about 27mm (a small wide angle). According to this standard, 2x was about 54mm, 3x was about 81mm, 4x was about 108mm, and 5x was about 135mm. In other words, the final focal length was multiplied by 27. On a mobile phone, zooming 3x -10x was considered telephoto. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Calculating the length of retirement
There were several ways to calculate the length of retirement: 1. ** Continuous calculation method (continuous calculation of working age)**: For example, if an employee is transferred from Unit A to Unit B, his working time in Unit A and Unit B shall be counted as continuous working age. If an employee is wrongly dealt with and is later reexamined and rehabilitated, the time of the wrong treatment can be counted as continuous service years with the time of continuous service years before the wrong treatment and the working time after rehabilitation. 2. ** Consolidated calculation method (combining the consecutive years of service)**: It refers to the employee's work experience. If there is a break for a period of time that is generally not due to the subjective reasons of the employee, the time of this break will be deducted. The two working hours before and after the break will be combined for calculation. For example, the continuous working hours of retired workers and staff before retirement and after rejoining the work can be combined. 3. ** Working Age Conversion Method **: For workers who are engaged in special types of work and work in special working environments, their continuous working age can be converted. For example, miners working underground or workers who work in low-temperature workplace below 32 degrees Celsius or high-temperature workplace above 100 degrees Celsius, when calculating their continuous service years, each year of work in such places can be counted as one year and three months. In the industries of refining or manufacturing lead, mercury, arsenite, phosphorous, acid, chemistry, military and other industries, the employees who are directly engaged in work that is harmful to their health will be counted as one year and six months for each year they are engaged in such work. In addition, the calculation method of military service was that the year of enlistment was counted as one year of military service regardless of the month of enlistment. The year of retirement was also counted as one year of military service regardless of the month of retirement. However, social security was calculated based on the month of actual enlistment to the month of actual retirement. At the same time, the retirement salary was related to the number of years of contribution, the base of contribution, the retirement age, when to participate in the insurance, when to retire, where to retire and other factors. The calculation method of retirement salary was the total number of years of contribution (commonly known as the length of service) ×3, among which, if it was more than 7 months but less than 12 months, it was calculated as 1 year. It should also be noted that the length of service was generally divided into the number of years of actual payment of pension insurance, as well as those who seemed to have "missed" but could actually "make up" the number of years of payment. The identification of the number of years of payment required the corresponding supporting materials. The novel "Ten Years of Death" is equally exciting. Everyone is welcome to click and read it!
Calculating lifespan for free
Calculating one's lifespan was a complicated process. It required a comprehensive consideration of many factors, including the heavenly stems and earthly branches, the five elements, and the divine and fiend elements. Here are some basic steps: 1. To determine the eight characters, one needed to know the year, month, day, and time of birth to obtain the eight characters composed of the year column, the month column, the day column, and the time column. Each column was composed of two characters from the Heavenly Stems and Earthly Branches. From this, one could analyze the attributes of the five elements in the eight characters and their balance. This was the key to determining the prosperity and decline of the five elements. 2. The strength of the dry sun: According to the dry sun in the eight characters, combined with the specific relationship between the five elements, determine the degree of weakness of the dry sun. An exuberant dry sun might indicate a longer lifespan, while a weak dry sun might affect one's lifespan. 3. According to the relationship between the five elements, the financial official seal blade in the eight characters had an impact on longevity. These factors played an important role in the fate and could affect a person's lifespan. 4. The analysis of the Longevity Star: In the eight characters, the Longevity Star usually referred to the Seal Star, the Food Injury Star, and the God of Lu. If the star in the eight characters was the god, then the star was regarded as the real longevity star. If the star was exuberant, the lifespan would be long, otherwise, it would be short. If the food injury was properly balanced, it would help to prolong the lifespan, otherwise, it might lead to a shorter lifespan. If the God of Lu was well equipped, it could increase the lifespan, otherwise it might reduce the lifespan. However, it was important to note that the eight characters were a traditional method of divination. There was no scientific basis to prove that it was completely accurate. The novel " Ten Years of Death " is equally exciting. Everyone is welcome to click and read it!
Calculating the number of days in 2024
The year 2024 was a leap year, and the number of days could be calculated according to the definition of a leap year and the number of days in a month. According to the definition of leap year, if a non-hundred-year could be divided by 4, it was a leap year. 2024/4 = 506, so 2024 is a leap year. Looking at the number of days in the month, January, March, May, July, August, October, and December had 31 days, April, June, September, and November had 30 days, and February had 29 days in leap years. The calculation was: 7×31+4×30 + 29 = 217+120+29 = 366 days. In total, there were 366 days in 2024. The novel "Hundred Years of Spaceship" is equally exciting. Everyone is welcome to click and read it!
There are several kinds of lenses
There were C ports, CS ports, F ports, M72 ports, M95 ports, and so on. In addition, different camera manufacturers also had their own lens mounts, such as Canon's " EP," Nikon's " F," Pentax's " K," Sonny's " E," Pantheon's " LUMIX," Fuji's " X," and so on. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>