Live concert camera focus
Take the Nikon camera as an example. During a live concert, you could use the AF-C continuous focus mode for Nikon (the artificial intelligence servo-mode for Canon DSLR cameras). Continuous focus allowed the user to chase after a high-speed moving target until the shutter button was pressed. It was more suitable for shooting the theme of a live concert. Different cameras may have different focus settings during live broadcasts. For example, when Canon R5C is used with an RF24 - 105 lens for live broadcasts, first open the camera menu, find the fourth item in the first big menu, and select continuous AF. If it is a live broadcast room with goods, it is recommended to choose large (area focus) for the AF-focus frame, and cover the chest and face. If it is a live broadcast room with a large walking range, the AF-focus frame can be selected to the entire area. Then, he went to the fifth item on the first menu. He turned on face detection and tracking. He chose face priority for facial AF. He turned on eye detection. Finally, he set the focus speed. AF-speed +2, and RF-response +3. In a concert where the lighting was complicated and the characters might move quickly, manual focus was difficult to operate and might miss the shooting moment. The continuous focus function in autofocus mode could better track the subject to ensure a clear picture. Read more exciting novels for free
How to adjust the focus of the camera live broadcast
To adjust the focal length of the camera in the live broadcast, you can do the following: 1. If you use a camera with a zooming function, you can control the focal length and focus of the lens through the remote control or mobile phone APP to switch between the far and near scenes. 2. Unscrew the fixing screw of the back focus adjustment ring of the camera (some cameras can be adjusted directly by adjusting the adjustment screw on the side or the back focus adjustment wheel); 3. adjust the zoom lens to the maximum telephoto (zooming in the scene) position, and use the focus ring on the lens to set the focus until the image is the clearest; 4. He adjusted the zoom lens to the maximum wide-angle (Wide short focal length, the lens has the smallest millimeter count, and the object seen is the smallest) position, and rotated the back focus adjustment ring until the image was the clearest. 5. To adjust the focal length of the surveillance camera, you can turn on the automatic electronic shutter function of the camera and adjust the lens aperture to the maximum with the controller. Aim the camera at an object 30 meters away and adjust the focus to infinity. Use the controller to adjust the lens zoom to push the scene to the farthest and adjust the intercept of the lens to make the scene the clearest. Then use the controller to adjust the lens zoom to zoom in the scene and fine-tune the lens focus to make the scene the clearest. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Focus the surveillance camera
If it was a general non-integrated surveillance camera, the method of adjusting the focal length was as follows: First, remove the camera, check the small screw like parts at the lens and loosen it, then turn the circle on the lens to adjust the focal length. When adjusting the focal length, it was best to take it off and adjust it while facing the monitor screen. If it was inconvenient to take it off, two people were needed. One person looked at the screen and cooperated with gestures or words, and the other person adjusted it next to the camera to achieve the best effect. It could also be adjusted manually. Some surveillance cameras had two buttons that could be rotated. One was used to adjust the distance and the other was used to adjust the clarity. There was another adjustment method: first loosen the fixing screw of the camera's rear focal length adjustment ring; adjust the zoom lens to the maximum telephoto position, and use the focal length adjustment ring on the lens to set the focal length until the image is the clearest; then adjust the zoom lens to the maximum wide-angle position, and turn the rear focal length adjustment ring until the image is the clearest; when switching from telephoto to wide-angle, repeat the above two steps until the image is in focus; finally, after the setting is complete, tighten the rear focal length adjustment ring. In addition, he added a new experience of adjusting the lens. He loosened the screw that fixed the standard lens, adjusted the magnification, and adjusted the lens to a telephoto state. Then, he zoomed in on the distant object, and then adjusted the focal length to make the close-up image clear. Then, he pulled the lens back to the wide-angle state by zooming out. The image he just shot should be a panoramic view. Don't adjust the focal length of this panoramic view (even if the image is blurry, don't adjust it). Go straight to the next step, which is to adjust the back focal length to adjust the image to the best picture. Finally, tighten the small screw of the lens, and the back focal length adjustment is completed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
fixed-focus camera
The fixed-focus camera had its own unique characteristics and uses in the field of photography. In terms of image quality, fixed-focus lenses usually provided excellent image quality, with advantages in terms of resolution, out-of-focus, anti-glare, and distortion control. For example, in some flat photography scenes that required demanding image quality, the fixed-focus lens could meet the needs of the photographer for high-quality imaging. The fixed-focus lens had a simple structure, low design complexity, and a single focal length, which made the lens body small and easy to carry. In terms of aperture, the traditional fixed-focus lens could easily achieve a large aperture, which could achieve a shallow depth of field and better blurring effect. However, in 2024, large apertures were no longer exclusive to fixed-focus lenses. Some zoom lenses could also achieve large apertures. In terms of video shooting, fixed-focus lenses had applications in live broadcasts and other scenes. For example, when fixed-focus mobile cameras were used for live broadcasts, the fixed-focus lens could make up for the gap between fixed-focus zooming lenses and fixed-focus mobile cameras when the image might be lost through wireless image transmission. However, in general video creation, the zoom lens had a wider range of uses because video shooting usually required the lens to have a larger zoom range, a constant aperture, a relatively stable image quality, and better anti-shake performance. Many zoom lenses could meet these requirements. In contrast, fixed-focus lenses might have problems such as too shallow depth of field becoming a burden in video creation, frequent lens replacement affecting work efficiency, and so on. In short, fixed-focus cameras had irreplaceable value, but with the development of technology, they also faced the competitive challenge brought by zoom lenses. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Manual camera focus
Manual focus refers to the method of focusing by turning the lens focus ring or by pressing the direction key of the body to achieve clear focus. In the era of digital cameras, it was generally used for autofocus errors. It was a powerful supplement to autofocus and was still indispensable in the digital era. Its working principle could be divided into "electronic manual focus"(when paired with a large-caliber super-telescope lens, the electronic circuit would detect the rotation of the manual focus ring and then drive the lens body motor) and "full-time mechanical manual focus"(when activated, it does not consume electricity, and uses the roller and swivel ring different from autofocus to drive the lens group). Manual focus relied heavily on the human eye's judgment of the image on the focus screen, as well as the photographer's proficiency and vision. Early single-lens reflex cameras and rangefinder cameras basically used manual focus. Nowadays, professional and semi-professional digital cameras, as well as digital single-lens reflex cameras, were also equipped with this function to meet different shooting needs. After focusing, the scene would be clearly displayed on the focusing screen, and the camera body with the focus prompt function would provide the user with a reference focus instruction. The focusing screen would provide auxiliary focusing methods such as fresnel mirror and split image. It could also be connected to an external magnifying eyepieces and magnifying glasses to improve accuracy. Some automatic lens 'manual focus function was driven by a stepping motor. When the user turned the focusing ring, the motor in the lens would rotate almost simultaneously to drive the lens to focus. This method had a simple structure and the internal sealing of the lens barrel was better, but there was a delay. Manual focus may be required in the following situations: 1. In low-light environments, such as night photography, indoor concerts, astrophotography, or landscape photography under weak light sources, autofocus may not be able to accurately focus due to insufficient light or contrast. Manual focus can be used to accurately adjust the focus with the help of auxiliary equipment. 2. For high or low contrast scenes, the autofocus system may not be able to accurately identify the focus area in extreme contrast environments (such as a dark subject in front of a bright background or a large solid background). Manual focus can ensure that the focus is at the desired position. 3. For macro photography and close-up photography, due to the extremely shallow depth of field, autofocus may repeatedly search for the focal point. Manual focus can accurately locate the focal point on a specific detail of the subject. 4. When using special filter (such as long exposure ND filter, starlight mirror, soft focus filter, etc.), autofocus may not work properly. Manual focus can ensure accurate focus. 5. Time-lapse photography and long-exposure scenes (such as night sky star orbit, light painting, etc.) required a fixed focus. Manual focus could lock the focus to prevent autofocus from changing the focus position due to changes in light or object movement. 6. For still life and product photography, precise control of the focus was very important. Manual focus could ensure that the focus was consistent when repeated shots were taken. 7. In extreme weather conditions such as rain, fog, and snow, or when shooting transparent or reflective materials (such as glass, water, smooth metal, etc.), autofocus may fail or focus incorrectly. Manual focus can be aimed at the actual focus. 8. When using old-fashioned or special lenses (such as old-fashioned manual lenses, shift-axis lenses, large-format lenses, and other lenses that do not support autofocus), you can only manually adjust the focus. 9. In terms of creative control, in order to pursue specific artistic effects (such as hyperfocal shooting, deliberately blurring certain parts, etc.), manual focus could achieve personal control of the focal plane. For area-focus (a manual focusing technique), each manual lens was labeled with a depth-of-field gauge, which was composed of two rows of numbers, focusing distance and aperture range. For example, the center position was aligned to infinity, which meant that the focus point was at infinity. Different aperture values corresponded to different depth of field ranges. Mastering the depth of field ruler could ensure that the subject was in the focus range without looking at the viewfinder, thereby increasing the shooting speed and capturing the instant image. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Cloud Live concert
Yunduo had held a concert in Kunshan on the evening of October 19th. The atmosphere was lively, but there was also an interlude. Some fans shouted the names of Daolang and Xu Ziyao, affecting the progress of the performance. However, the cloud was grateful to its master, Daolang. The netizens had different opinions on this behavior. Some people thought that it was not a good time to be grateful. Yun Duo interacted frequently with her fans at the concert and sang many classic songs. Her voice was touching. Although there was some controversy, her performance still won a lot of applause from the audience. In addition, Yunduo originally planned to participate in the Huanggang concert, but due to the sponsorship of Yanghe and other reasons, he could not participate, and his name had been removed from the lineup. There was also Yunduo and Yunfei who had sung " Heavenly Love " at Yunfei's concert in Hohhotte. The novel " The Legend of Dian Kingdom in Clouds as Deep as the Sea " is equally exciting. Everyone is welcome to click and read it!
2019 Cloud Live concert
On October 19,2019, Yunduo held her first solo concert,"Dream on the Clouds", at the Kunshan City Sports Center Stadium in Jiangsu Province. The ticket prices were divided into three types: 200 yuan, 400 yuan and 800 yuan. The tickets went on sale on August 20,2019, and on September 23rd, there was a "full house" situation. As soon as the cloud appeared, it caused the audience to cheer. The audience put up the slogan "Look at the cloud with gratitude". The scene was very warm. In addition, on August 4th, 2019, there would be Yunduo's "Le Xiang Hui" concert. While waiting for the TV series, he could also read the exciting content related to this site!
Dog fixed-focus camera
In dog photography, the fixed-focus lens had its own unique application. If you were shooting dogs indoors, considering the poor lighting and small space, you could choose a 24 - 85mm fixed-focus large aperture lens. The large aperture could guarantee the shutter speed of indoor shooting and improve the image quality with relatively low sensitivity. In addition, if you use a fixed-focus lens to shoot, you must open the aperture completely. In terms of the characteristics of the fixed-focus lens, the angle of view of the 85mm fixed-focus lens was about 28 degrees. With the deep background of the large aperture, the background could be easily simplified to highlight the subject during composition, and the background blurring effect was better. When shooting a full-body close-up, the shooting distance was about 1.5 meters to 5 meters. This distance allowed the photographer to maintain a comfortable distance from the dog to avoid the pressure on the dog when the distance was too close. The image quality of the 85mm fixed-focus lens was usually higher. However, the fixed-focus lens had a fixed angle of view. If the shooting distance and angle were not controlled well, the picture would lack variation, which would easily make a group of photos seem monotonous and cause aesthetic fatigue. For beginners, if they only wanted to buy a single lens, considering its functionality, it was recommended to choose a telephoto lens with a larger focal length range such as 70 - 300mm f/4.5 - 6.3. However, this was not a fixed-focus lens but a reference given from the perspective of the lens. When using a fixed-focus lens to shoot a dog, you can learn to use the background to make the picture more atmospheric and layered. When taking a set of photos, try to make the dog's physical emotions change as much as possible. Control the light and tone, try to use backlighting and side lighting, and choose to shoot in the morning or sunset at dusk to make the photos more brilliant. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The camera's electronic focus
There were built-in electronic tracking and external mechanical tracking. When using the built-in electronic focus tracker, the dedicated cable for each brand of camera must be used to connect the stabiliser (such as the Cloud Crane 2) to the camera body. Cloud Crane 2 was developed based on Canon 5D. Due to the problem of the focus system agreement of different brands of cameras, its support for Sony and Pantheon was not as good as Canon. The built-in electronic focus tracking currently only supported Canon DSLR and Canon original lenses. Using Canon original lenses to focus was smoother, and the lens ruler would move along to check the focus distance. However, there was a delay in the fast focus switch. After the fast focus switch ended, the focus would slowly move forward. Sonny and Pantheon only supported the handle buttons to take photos or record videos. They could not use the handle focusing wheel to achieve built-in electronic focus, and parameters such as aperture and shutter could not be controlled from the handle. For some cameras that did not support built-in electronic focus tracking, there were independent external mechanical focus trackers (such as the external mechanical focus trackers developed by Zhiyun for use with the Cloud Crane 2) that could be connected to any brand of camera lens and control the focus tracking. After connecting the focus wheel, the memory point could also be set to facilitate focus drift. For the stabiliser, it was also necessary to consider whether it and the camera model could be used for electronic focus tracking. If not, it was necessary to consider purchasing a focus tracker. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The focus of the phone camera is slow
The slow focus of the phone camera may be caused by the following reasons: ** 1. The characteristics of the focusing method itself ** 1. ** Phase-Based Focus (PDAR)** - The principle was to reserve a blocking point on the sensor to detect the phase, and determine the focus offset value through factors such as the change in the distance between the sensors to achieve accurate focusing. However, this focusing method relied on the environment with sufficient light. If there was insufficient light, the focusing speed would be slower. 2. ** CDaF ** - The principle was that the lens moved forward from the beginning of focusing to the end of focusing. There was a process of "overfocusing" and then retreating. The technique was relatively complicated, and there were many focusing steps, so the focusing speed was relatively slow. However, it could still focus accurately in dark environments. 3. ** Laser Focus (LAFF)** - Although it was fast to focus at close range and in a dark environment, the focus distance was limited, and the infrared laser spot would be seen on the mirror screen. ** 2. Other influencing factors and solutions ** 1. ** Hands shaking ** - During the focusing process, if the hand shook, it might affect the focusing speed and even cause the focusing to fail. Therefore, he had to keep his hand steady when focusing. 2. ** Lighting environment ** - As mentioned earlier, phase focusing relies on a well-lit environment. Overall, a poor lighting environment may slow down the focusing speed. You can try to focus in a well-lit environment. 3. ** Photographer ** - When shooting moving objects, focusing would be slightly slower than normal. At this time, he could click on the screen to manually focus to improve the accuracy and speed of focusing. 4. ** Problem with the device itself ** - If the focus of a Huawei phone was slow, you could first confirm the situation under which the focus was slow, and then check one by one. When other phones such as the Vivo have slow focus, you can restart the phone first. If it doesn't work, you can try to backup the phone data, restore the factory settings, or upgrade the system software. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Focus on a cell phone camera
There were many ways to focus a cell phone camera: - ** Automatic Focus (AFF)**: This was the most commonly used method. When aiming at the subject, the phone camera would automatically detect the distance of the object and then adjust the focal length of the lens to obtain the best focus effect. Whether it was near or far, the object could be auto-focused. - [Touch Focus (TOF): This is a more accurate focusing method.] When shooting, touch the object on the screen, and the phone will automatically focus on the object, so whether it is a small object that you want to close-up or a distant scene, as long as you touch the corresponding position on the screen, you can accurately focus, ensuring that the photo taken is clear and sharp. - ** Professional mode adjustment **: For users who pursue higher photography quality, the professional mode of the phone camera can come in handy. In this mode, you can manually adjust the focus. You can manually adjust the focus position by sliding the focus slide or clicking on the focus area. This allows you to get better focus on objects at different distances, especially in complex lighting conditions or when shooting fast-moving objects. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>