Under the passers-by's camera lens, she was as beautiful as a fairy
Many female celebrities were as beautiful as fairies under the cameras of passersby. For example, Gao Yuanyuan was in good shape. Whether she wore a blue and white striped top with white shorts, a blue long dress to attend an event, or a simple and appropriate makeup to appear at an event, she exuded a charming charm. She was still in her forties with tight skin and a sweet smile. Even though Fan Bingbing was dressed casually, like loose pajamas and pajama pants, and was holding a dog without makeup, it was difficult to hide her beautiful face. Her cold white skin and facial features were stunning. In her early years, Liu Yifei's photos were full of colloid and full of aura. In the photos, she looked elegant in ancient clothes and had an immortal aura. Her superior facial features and extraordinary temperament were very outstanding. Tang Weisheng's face in the picture was auto-focused and came with a skin-rubbing beauty. Her big wavy hairstyle made her intellectual and gentle, and she also had a unique artistic aura. Liu Shi Shi's skin was clear and firm, and her smile was like a spring breeze. Her indifferent personality made her exude an intellectual and elegant temperament. She looked better in raw pictures than in refined ones. Ni Ni's temperament was charming. When her hair was tied up and her neck was exposed, her temperament was unique. When she walked the path of a beautiful woman, she was equally moving. There was also Vietnam's Deng Yuzhen, who was known as the Vietnamese version of Lin Chi Ling. Her offline activity photos were very beautiful, and her facial features were exquisite and exotic. Although Tang Yan's figure was said to be like a passerby, her face was as delicate as a fairy. These female celebrities all displayed stunning beauty under the cameras of passers-by. Read more exciting novels for free
Under the passers-by's camera, she's still so beautiful
In the entertainment industry, there were many celebrities who were still very beautiful under the cameras of passers-by. For example, Angelababy's photo was taken by a passerby at the market. She was beautiful without any filter or editing. Her figure and beauty were amazing. She had a delicate side profile, a beautiful jawline, a high nose bridge, and big eyes. Even if she had given birth, she still looked like a girl. Gulnaza was also very beautiful in the eyes of passers-by. Her skin was fair, and she was still very good-looking without any beauty or filter modifications. Her facial features were exquisite, and her temperament was outstanding. She was quiet, restrained, and cute. She had a variety of temperaments, and her various styles were stunning. Chen Duling was ridiculously beautiful in front of passers-by. She was named the national school belle champion because of an ID photo, which was very suitable for the image of the female lead in a novel. There was also South Korea's Song Hye Kyo. When passersby witnessed the filming scene, she looked like a Barbie doll, and her looks were heaven-defying. These celebrities were able to maintain their beauty in front of passers-by because of their good facial features, outstanding temperament, and many other factors. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What is the lens of the camera lens?
Based on context alone The lens of the camera lens was made up of many different types of lenses. This included a concave lens, which had a thick middle and thin edge structure. It had a converging effect on light, which helped to focus the light on the imaging plane, making the image clear. There were also concave lenses, which were thin in the middle and thick at the edges. They had a diffusing effect on light and were often used to correct aberrations. In addition, there were also aspheric lenses. These lenses were not the traditional spherical shape. They could better correct aberrations, improve image quality, and reduce image distortion and blurring. They were widely used in modern camera lenses. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
camera lens
A lens was an optical component composed of two concentric spherical surfaces surrounding a transparent medium (such as glass). It was an important component of a camera lens. It was composed of different focal lengths, lenses, and segments. Its main function was to form images, gather light, and obtain a parallel light source. It could bend and refracted light. Different focal lengths of the lens and the use of optical methods could change the perspective effect of the picture. A good lens could make the images and images clearer and more delicate. The lens of a camera could be divided into two categories: a concave lens (thicker in the middle than the edge) and a concave lens (thinner in the middle than the edge). In surveillance cameras, there are many different specifications of lenses, such as lenses with different angles (such as 9 degrees, 15 degrees, 30 degrees, etc.), different diameter, different lamp beads (such as 3030 lamp beads, 3535 lamp beads, etc.), and there are differences in materials, processing technology, and imaging effects. Some were made of optical-grade PC material and manufactured through high-precision aspheric optical processing technology. They had the characteristics of uniform light spots and no dark corners, which could effectively improve the image quality and make the camera better in different scenes to meet more needs. In addition, there was also the emerging technology of superlens technology, which used traditional semiconductor processing technology to build nanostructures on a flat surface to create lenses. This lens was very thin, only a few hundred millimeters thick, about twice the thickness of a human hair. It could also integrate the functions of multiple curved lenses into one device, helping to solve the problem of space constraints. It might bring new development directions for camera lens technology. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The ugly star under the passers-by's camera
Under the lens of passersby, some of the celebrities 'images were quite different from their images on stage or in the retouched pictures. For example, Huang Zitao, under the passers-by's camera, had dark skin and heavy eye bags. He was described as ugly as a donkey, and every time he had thick eye makeup, his face value immediately dropped to zero without eye makeup; Zhang Yixing's photo under the passers-by's camera looked much duller and almost unrecognizable; Quan Zhilong in a passer-by's photo, with yellow hair and a yellow coat, rustic and expression management is not done well, looking very dull; Wu Yifan was fatter under the passers-by's camera, which was very different from the image in the show; Wang Junkai was photographed by passers-by during puberty with pimples all over his face, and his face was not smooth; Jiang Shuying's hairline moved back under the lens of the passers-by, and his face was full of wrinkles; Jiang Xin wore a tight skirt in the studio, and the fat on her waist and arms was obvious; Luo Yunxi looked haggard in the passers-by photo at the airport, without makeup and with a pot cut, and was not as handsome as before. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The camera lens changed to a projection lens
Some data showed that the telephoto projection could be used to change the camera lens into a projection lens, and a size image could be projected at a distance of 1.5 meters. He could also use a flashlight as the film's back light and a Nikon lens as the projection lens to make a simple projector and project the reverse film on the wall. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
It's noon, the sun is high, the camera is single-lens reflex camera, and the lens is dimmer.
When using a single-lens reflex camera to take photos under the noon sun, the dimmer lens had the following functions and advantages: 1. ** Reduce light intensity **: The sun is strong at noon, which will easily cause the photo to be overexposed. The main function of the light reduction mirror was to reduce the light intensity entering the camera lens, making the image more balanced and delicate. 2. ** Extending the shutter speed range **: In such a high-exposure environment, even if you adjust the shutter speed to the limit, you may still not be able to get a suitable exposure effect. The dimmer lens could reduce the amount of light entering the lens, allowing the shutter speed to be further increased, thus obtaining the ideal exposure effect. For example, when shooting a scene that required a long exposure to create a special effect (such as a silky water flow), it was difficult to achieve a long exposure under the strong sun, and the dimmer lens could be used. 3. ** Depth-of-field improvement effect **: If you want to achieve a shallow depth-of-field effect, you can use a dimmer lens to reduce the light intensity and open the camera aperture to achieve a larger aperture value, thereby achieving a shallow depth-of-field effect. There were also some things to note when using the dimmer under the noon sun: 1. ** Stabilize the camera with a tripod **: Since a slower shutter speed may be used (such as long exposure shots for special effects), a tripod is needed to stabilize the camera to prevent camera shake from affecting the shooting effect. 2. ** Turn off the image stabiliser, turn on the mirror pre-lift, and use the shutter release to reduce shaking **: This will help to further improve the stability and image quality of the shot. In addition, the dimmer has different gears, such as the ND2 reduces the exposure by 1 gear, the ND4 reduces the exposure by 2 gears, the ND1000 reduces the exposure by 10 gears, etc. You can choose the appropriate gear according to your actual needs. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What's the use of a camera lens?
The camera lens was the most critical equipment of the video system, and its quality (index) directly affected the overall performance of the camera. The lens was equivalent to the crystalline lens of the human eye. Without the lens, the image output from the camera would be a vast expanse of whiteness. There would be no clear image output, which was consistent with the principle of home cameras and cameras. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The camera lens is expensive
In the field of photography, expensive lenses had their value. Generally speaking, more expensive lenses had higher performance in terms of optical quality, workmanship, and performance. For example, in the field of medium and long focal length lenses, Canon's RF70 - 200mm f/2.8L IS USM was priced at 16999 yuan, and the Sony70 - 200mm F2.8GM OSS II was priced at 18999 yuan. These lenses were expensive, but they could provide better imaging results, excellent focusing performance, and good durability on their respective cameras. However, with the changes in the photography market, the relationship between price and value did not completely follow the traditional principle of "you get what you pay". In the micro-monocle era, although some high-end lenses had improvements such as quieter focusing, better design, and improved electronic functions, compared to similar lenses in the DSLR era, users felt less about the improvement in optical quality, but the price generally rose. Some of the affordable entry-level lenses, such as the 50mm f1.8 lens, were no longer as affordable as before. Branded lenses of this size were even hyped up to three times the release price. 24 - 105mm f4 or similar lenses were nearly twice as expensive in the micro-single era as in the single-lens reflex era. Although the optical quality had improved, there was no particularly huge breakthrough. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The lens and camera interface
The lens and camera interface was a component used to connect the lens and the camera. Suzhou Ouka optical instrument factory specialized in the production and development of a camera interface, this interface can be connected to different brands and models of lenses, so that the camera can be used normally. There are many types of industrial camera cable ports: - **USB port **: It is a commonly used port for digital cameras. It can directly output digital image signals. USB was the full name of Universal serial bus. The interface was 4-pin, including 2 power cables and 2 signal cables. There were different versions of USB. The early USB2.0 interface was convenient and widely used, but the transmission rate was slow (480Mbit/s), the communication distance was short (5m), and the band width was mostly used for image transmission (80%). The transmission required the CPU to participate in management and consumed a lot of resources, and the interface was unstable. USB3.0 added two sets of data lines on the basis of USB2.0, which were backward compatible. The transmission speed was increased to 4.8Gbit/s, and the communication distance was extended to 10m. However, the transmission distance was still relatively short. USB interface cameras were easy to use and had a wide range of ports. They were widely used in microscopes, scientific research experiments, portable equipment, and other industries. At present, USB Type Micro-B ports were the mainstream on industrial interface cameras. In the future, USB Type C ports might be popularized. - ** IMEE1394 (Firewire Interface)**: It is a high-speed serial bus. It supports hot swapping, real-time data transmission, and uses a bus structure. It is widely used in the industrial field. It has good protocol and coding methods, and the transmission speed is stable. The 1394a's maximum transmission speed was 400mps, and the 1394b's maximum transmission speed was 800mps (3.2mps was relatively rare). Its interface was divided into 4-core and 6-core. The 4-core contained two pairs of data cables, and the 6-core had a set of power cables in addition to the data cable. This interface did not require a controller and could be used for peer-to-peer transmission. The 1394a's maximum transmission distance was 4.5 meters, and the 1394b's transmission distance was usually 10 meters (100 meters, 100 Mbit/s, when the data rate was reduced). However, the interface's penetration rate was low and it had been slowly eliminated by the market. - **Camerlink interface **: A digital image signal communication interface protocol introduced by the Aia Association. It is a serial communication protocol that uses the LVVS interface standard. It was developed from the Channel Link technology, adding the transmission control signal and defined the relevant transmission standards. The protocol used the MDR - 26-pin connection or the SAR- 26-pin connection, which had high speed (up to 6400Mbps), strong anti-interference ability, and low power consumption. However, it required a separate CameraLink interface, which was not portable, expensive, and rarely used in practical applications. - ** Gige Giga-bit ether interface **: created and promoted by Aia. It is a camera interface standard developed based on the Giga-bit ether communication protocol. It is suitable for industrial imaging applications. It can transmit uncompressed video signals over the network and can use low-cost cables to transmit images over long distances. In addition, in the field of machine vision, other data transmission ports were also developed: - **CoaXPress (CXP) interface **: launched in 2008, supports high-speed imaging applications, uses 75 Omega coax cable, supports data transmission speed of up to 6.25Gbit/s per channel, and can increase the transmission rate of multiple channels. Each cable can provide up to 13W of power. It requires the "device" and "host" to support the GenICam camera programming interface. However, the cost of installing multi-channel cable components and frame clips on a single-channel coax cable increases rapidly. - **CameraLink interface **: In 2000, it was launched by Aia Association and gradually upgraded.（2.04Gbit/s）、Medium (5.44Gbit/s) and Deca/Extended (6.8Gbit/s). Base uses an ADC- 26 pin, medium/full requires a second cable to double the capacity, Deca/Extended can transmit up to 6.8Gbit/s data, and like the CXP interface, it requires an image acquisition card that is compatible with the CameralLink power supply (PoQL) standard for power supply. It lacks error correction or resend functions. The cable setup was expensive and troublesome. - **GigE Vision standard interface **: It is managed by the Aia Association and allows the use of existing low-cost ether cables, connections, switches, and other components. Copper cables can transmit image data up to 100 meters away, and more data can be transmitted through the switch and optical fiber adapters. It has the potential to create different network topologies. Each camera can be placed on the network independently through an IP address. It can be viewed, controlled, and monitored from any PC on the network. However, the maximum 115mb/s has limitations for certain applications. However, NBUSE-T technology could increase the band width within its framework. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Surveillance camera with a lens
The surveillance camera was just a single video capture device. The resolution and resolution of the lens were higher than that of the computer's video head, but it could not catch up with professional digital cameras or DVs. In reality, cameras and lenses were mostly purchased separately. The user can calculate the focal length of the lens according to the size of the target object and the distance between the camera and the object to determine the required lens. The lens required by each user depends on the actual situation. It cannot be assumed that the camera (head) already has a lens and does not need to be equipped with another lens. The focal length of the lens determined the field of view of the camera. For example, a wide-angle lens was suitable for shooting in a large space and could capture more content. A telephoto lens was suitable for long-distance shooting and could see details in the distance. Indoors, they usually chose short focal lenses, such as 2.8mm or 3.6mm lenses, while outdoors, they chose lenses based on distance. Moreover, different focal length lenses had different imaging effects. Long focal length lenses could see more details of distant objects, but the field of view became smaller and the viewing range became narrower. Wide-angle lenses had a wide viewing range, but it might be difficult to distinguish some details. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>