How to choose the camera lens interface
Choosing a camera lens interface required consideration of the following aspects: ###1. Type of camera mount 1. ** Understand the brand and model of the camera ** - Different camera brands had their own typical mounts. For example, Canon had the EF, ef-s, ef-m, and rf-mount; Nikon had the f-mount and z-mount; Sony had the a-mount and e-mount; Pantheon had the M4/3 and l-mount; Pentax had the k-mount; Fuji had the x-mount and g-mount. If you already have a camera body, you must choose a lens mount that matches the camera body mount. Otherwise, the lens cannot be installed on the camera body. 2. ** Consider compatibility with future upgrades ** - For some users who might upgrade their bodies in the future, they should pay attention to the development trend of the camera brand mount. For example, when Canon upgraded from a traditional mount to an all-electronic mount, choosing a forward-looking mount type lens interface might reduce the risk of the lens not being usable in the future. ###2. Use of the lens 1. ** Requirement for photography type ** - If you were mainly doing landscape photography, you might need to consider some types of lens with large apertures and high resolution to meet the requirements of shooting in different lighting conditions and the details of the picture. For example, on a full-frame camera, a large-caliber bayonet might be more suitable for a high-end wide-angle lens to reduce aberrations and dark angles. - If it was portrait photography, it might be necessary to consider a lens interface that could support fast autofocus to ensure fast and accurate focus when shooting people, such as some bayonet and lens combinations with advanced focusing technology. - For video shooting, like Canon C300 III with Canon lens, the stability of the lens interface during zooming and the video focusing performance had to be considered to ensure that there would be no problems such as out of focus during video shooting. 2. ** Special shooting requirements ** - If macro photography was needed, a special macro lens interface might be needed. This interface could ensure the accuracy and optical performance of the lens when focusing at close range. ###3. Brand of lens and compatibility 1. ** Original factory lens and sub-factory lens ** - The original lens generally had good compatibility with the camera body mount, and it performed best in terms of function implementation (such as autofocus, aperture control, etc.). For example, Nikon's F-mount lens could fully utilize the communication function between the Nikon body and the lens on a Nikon DSLR camera. - Although the sub-factory lens was cost-effective, one had to pay attention to the compatibility of the bayonet. Some sub-factory lenses may need to be reverse-engineering to fit the camera mount, and there may be compatibility issues, such as inaccurate focus on some mount cameras or the need for a hardware upgrade to be used normally. For example, sub-factory lens manufacturers such as Tenglong, Sima, and Tuli would release different versions of lenses for different bayonet mounts, and the time to market for different bayonet mounts might be different. The performance of the same model lens on different bayonet cameras might also be different. ###4. Budgets 1. ** Impact of mount on lens price ** - Some bayonet lenses with advanced technology or exclusive agreements were relatively more expensive. For example, due to the complexity of the agreement, Nikon's lens development cost may be transferred to the price, while Canon's radio frequency bayonet is more difficult to reverse, which may also lead to the high price of related lenses. Relatively speaking, some sub-factory lenses might have an advantage in price under the same bayonet, but they had to weigh the relationship between quality, compatibility, and budget. Read more exciting novels for free
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>
Nikon single-lens reflex camera lens interface
The lens mount of a Nikon single-lens reflex camera was an F-mount. From the early film DSLR to the recent digital DSLR, they all used F-mount. In terms of F-mount lenses, due to the different mechanical/electronic transmission methods of aperture adjustment, aperture information transmission, focal length information transmission, and autofocus, there were many types of single-lens reflex lenses. For example, manual non-CPU lenses included STAR lenses, AI lenses, AIS lenses, etc. According to the type of aperture adjustment, there were D-type lenses with manual aperture rings, G-type lenses without manual aperture rings, E-type lenses with electromagnetic apertures, etc. The F-mount lens was divided into two types: the FX-mount lens (suitable for all Nikon single-lens reflex cameras, similar to Canon's EF-mount lens) and the DX-mount lens (suitable for Nikon APS-C format cameras, similar to Canon's EF-mount lens). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Industrial camera lens interface buckle
The common interface of industrial cameras include C interface, CS interface, F interface, M72 interface, M95 interface, etc. The F interface was a snap-on interface. Usually, except for the F interface, the other interface was defined by the size of the thread and had a specific distance between the two. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The interface between the lens and the camera is divided
There were three types of interface between the lens and the camera, namely F, C, and CS. There were also M42, Lycra, Hassel, and AK. The F-type interface was a universal interface, generally suitable for lenses with a focal length greater than 25mm; when the focal length of the objective lens was less than 25mm, the C-type or C-type interface was used because the size of the objective lens was not large. The difference between the C interface and the CS interface was that the distance between the contact surface of the lens and the camera to the focal plane of the lens (the position where the camera's CCD-sensor should be) was different. The distance between the C-type interface was 17.526mm, and the distance between the CS interface was 12.5mm. The C-type lens and the C-type camera, the CS lens and the CS camera could be used together. A 5mm C/CS transition ring between the C-type lens and the CS camera could be used together, but the CS lens and the C-type camera could not be used together. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to choose a camera lens
When choosing a camera lens, you can consider the following aspects: ** 1. Choose according to the shooting content ** 1. ** Street photography **: 35mm focal length is more suitable. Because the focal length was not too wide, there would be no obvious distortion at the edge of the picture, and more environmental elements could be brought in to tell the story. 2. ** Professional portrait photography **: 85mm focal length is more suitable. The key to taking a portrait was to highlight the subject, and this focal length helped to create a shallow depth of field, thereby separating the subject from the background. 3. ** Landscape photography **: You can choose the "Big Three-Yuan" lens (16 - 35mm, 24 - 70mm, 70 - 200mm focal length, different brands of wide-angle focal length may vary). ** 2. Choose according to your photography level ** 1. ** Newbie or newbie photographer **: If you are a newbie with insufficient financial resources, you can consider a "small three-yuan" lens (the same focal length as the "big three-yuan", a constant zoom lens with an aperture of F4). Its price was affordable, cost-effective, and smaller. However, for lenses with a focal length of 70 - 200mm, photography novices and novices should use them with caution in the early stages of shooting, because this focal length is difficult to control in terms of perspective and spatial sense, and it is easy to affect the basic skills such as the use of the focal length and cognition. However, this focal length also had a unique advantage when shooting busts and photos that focused on compressing the spatial atmosphere (such as oil paintings), and it was closely related to the subject. ** 3. Choose based on budget ** 1. ** Enough budget **: If you have a large budget, you can choose a higher-end lens, such as the "Big Three Yuan" lens (F2.8 constant aperture zoom lens). Its aperture is larger and the image quality is better, but the price of a single lens is often more than ten thousand yuan. 2. ** Limited budget **: You can choose entry-level lenses that are affordable to the public, such as the "Small Three Yuan" lens or some domestic lenses. However, when choosing domestic lenses or sub-factory lenses, you must pay attention to the bayonet fitting problem. ** 4. Choose according to the camera mount ** Cameras of different brands, different types (single-lens reflex or micro-camera), and different frames (APS-C frame or full-frame) had different bayonet systems, such as the Canon full-frame single-lens reflex camera's EF-bayonet, the full-frame micro-camera's RF-bayonet, and so on. When choosing a lens, make sure that the bayonet matches the camera. Even if there is an adapting ring that can be used to adapt different systems of lenses, there may be flaws in the image. Long-term use is not recommended. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What model is the lens interface of the Pearl River camera?
The Pearl River S - 201 lens was fitted with an FO mount. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to choose the telephoto lens of the camera
When choosing a telephoto lens for a camera, many factors needed to be considered. First of all, it was necessary to make clear the purpose of buying a telephoto lens, whether it was used to shoot portraits, scenery, or other specific scenes. There were four common types of telephoto lenses: medium telephoto lenses (such as 70 - 200mm), telephoto to super telephoto zoom lenses (such as 70 - 300mm, 200 - 400mm, 100 - 400mm, etc.), and fully fixed-focus super telephoto lenses (such as 500mm, 600mm, 800mm). Different types had different usage opportunities and preferences. If it was just to gather the focal length, 70 - 200mm or 70 - 300mm was usually enough. The image quality of 70 - 200mm was better than 70 - 300mm, but the price was relatively higher. When choosing between these two lenses, one also had to consider the zooming ratio in the photography industry. The image quality of a lens with a zooming ratio of less than three times was relatively good. For example, the zooming ratio of a 70 - 200mm lens was about 2.9, which was within three times, while the zooming ratio of a 70 - 300mm lens was greater than three times. For special shooting needs, if long-distance shots were often needed, such as shooting birds, taking photos in places such as the Kenyan grasslands, etc., lenses such as 100 - 400mm, 200 - 400mm, and 100 - 500mm were more suitable. In terms of brand and model, users of different brands had different recommendations. For Canon users, whether it was F2.8 or F4, they should buy lenses with IS (anti-shake function) as much as possible. If the budget is sufficient, you can choose Love Xiao-White Bunny; if the budget is limited, you can consider the second-hand Xiao-Xiaobai; if you are conflicted between Love Xiao-Xiaobai and Little White, you can choose according to the use and weight. Love Xiao-Xiaobai is lighter, so you can choose it if you take more photos. If you were to use the Eos R system, the RF70 - 200mm F4LIS USM was a good choice. It was shorter than the EP version and lighter. For Nikon users, the electromagnetic pulse cannon would be the priority. If the budget was not enough, the Tenglong lens could be considered. However, the SP 70 - 200mm F2.8 Di VCUSD G2 should be chosen. For the users of the company, I recommend the F70 - 200mm F2.8 GM OSS II. In addition, when choosing between the original PE 70 - 200mm F4G OSS and the Tenglong 70 - 180mm F2.8 Di III VXD, the original Sony-made lens had been on the market for a long time, and the performance under the F4 aperture was not much different from the performance under the Tenglong F2.8 aperture. Only the internal zoom had an advantage, so the Tenglong lens was more recommended. When comparing the 70 - 200mm and 100 - 400mm focal length lenses, the large aperture of 70 - 200mm was better than 100 - 400mm in low-light environments, and it was more suitable for shooting portraits and more suitable for scenes;100 - 400mm could be positioned as a landscape lens, which was also suitable for travel shooting, but the disadvantage was that it was larger in size and weight. If you want to expand the focal length, you can use a combination of 100 - 400mm +85mm fixed-focus or 70 - 200mm + distance-increasing lens. At the same time, factors such as the weight of the lens and its maneuverability should also be considered. For example, the 70 - 200mm F4 may be more suitable because the new models of various brands have optimized image quality and focus, and the lens is more portable than the F2.8 large aperture model with the same bayonet. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to choose the lens of a sony camera
The following factors can be taken into consideration when choosing a Sony-grade camera lens: ** I. Based on budget ** 1. ** When the budget is sufficient ** - The zoom lens was a better choice because it was more convenient. For example, the Sony-made lens, such as the Sony-made F24 - 70mm F2.8GM II, was one of the Sony-made lenses. The second-generation lens was 20% lighter than the first-generation lens, and the image quality was improved. It could meet the needs of high-resolution body, video recording, daily hanging, and so on. The reference price was 13399 yuan. There was also the SonyFE70 - 200mm F2.8GM II, which had a weight reduction of nearly 30%, a significant increase in focusing speed, and excellent dispersion and glare control. The reference price was 17199 yuan. 2. ** When the budget is insufficient ** - He could consider a fixed-focus lens with better quality. For example, the Sima Art 85mm F1.4DG GN was priced at 6199 yuan, and the second-hand reference price was 4000 yuan +. It had fast focusing, good image quality, light weight, and full aperture. Its in-focus sharpness was impressive, and the out-of-focus blurring effect was ideal. It was suitable for portrait shooting. It performed well in purple and green edge control, and in most cases, the image quality was better than some original lenses. ** 2. According to the shooting requirements ** 1. ** Daily Records (mainly for home users)** - The Sony24 - 105f4G OSS was a good choice. It had a practical focal length and was suitable for recording daily life or as an on-camera lens. The 600g lens wouldn't be too heavy with the Sony24 - 105f4G lens. Its sharpness and overall optical quality were good. It was also good for shooting videos. It could meet the needs of high-resolution machines. The reference price was 6850 yuan. 2. ** Portrait Shooting ** - If you want to pursue a large aperture and a better focusing speed and other comprehensive performance, the SonyFE50mmF1.2GM is an option. The F1.2 large aperture lens has a fast focusing speed, and the closest focusing distance is 0.4m. The dispersion control is excellent, and the edge and center image quality are good. The lens body is small and weighs only 778g. The workmanship is solid, but the price is higher. The reference price is 13699 yuan. The SIGMA-Art 85mm F1.4DG GN was also suitable for portrait shooting. It had many advantages mentioned above and was relatively cost-effective. 3. ** Livestream requirements (Take the SonyZVE- 10 as an example)** - If he wanted better depth of field and image quality, he needed to use a fixed-focus lens with a large aperture. You can choose the three Musketeers (SIGMA16mmF1.4, SIGMA30mmF1.4, SIGMA56mmF1.4), but the price is higher. You could also choose the Vizos full-frame 40mm F2.5 fixed-focus lens. When used on a half-frame, it was close to the human eye's 50mm. The aperture could be opened up to 2.5. The price was more than 700 yuan. It was cost-effective and the focusing speed was not inferior to the original factory. ** 3. According to the characteristics of the lens ** 1. ** Requires the camera to be portable ** - The body of the SonyFE50mmF1.2GM lens was small and weighed only 778g, while the weight of the SIGMA-Art85mmF1. 4DG GN lens was only 625g. It was easy to carry and suitable for traveling and other scenes that required high lightness. 2. ** Requires picture quality and dispersion control ** - The dispersion control of the SonyFE50mmF1.2GM was excellent, and the edge and center image quality were good. The SIGMA-Art85mmF1. 4DG GN was equipped with five special low-dispersion lenses, which effectively corrected the dispersion and ensured the sharpness of the image. The focus was fast and quiet, and its in-focus sharpness was impressive. The overall image quality was clear. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to choose the lens of the Panasonic-GM 1 camera
The selection of lenses for the Pantheon GM1 had to be based on different shooting needs. If you are a travel enthusiast, you can choose the Lumix G Variant 12 - 32mm f/3.5 - 5.6. This lens has a wide focal length, which can meet the needs of shooting scenery and portraits. It is very light and suitable for use with the GM1. If you like to shoot portraits, the Lumix G 42.5mm f/1.7 is a good choice. Its aperture is large, which can bring a good background blurring effect. The focal length is also suitable for portrait shooting. If you are keen on street photography, the Lumix G 25mm f/1.7 is more suitable. The focal length is suitable for shooting people and buildings. The large aperture can bring a better background blurring effect, and it is light and suitable for matching with the GM1. If you need a lens that can cope with a variety of scenes, the Lumix G Variant 14 - 140mm f/3.5 - 5.6 is a good choice. Its focal length is wide, and its optical performance is excellent. It can meet a variety of shooting needs. At the same time, when choosing the lens, one had to pay attention to the weight, size, and other factors of the lens to ensure that it matched perfectly with the GM1. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to choose the size of the surveillance camera lens
Choosing the lens size of a surveillance camera required a combination of many factors. First of all, the size of the monitoring scene should be considered. If it was a narrow environment such as elevators and stairs, 2.8mm focal length was more suitable; for slightly larger scenes such as conference rooms and shops, 4mm lenses were suitable; parking lots, factory workshops, courtyards and other open places, 6mm lenses could be used. From a distance perspective, different focal lengths corresponded to different effective monitoring distances. For example, a 3.6mm lens was 15 meters away, a 6mm lens was 20 meters away, an 8mm lens was 25 meters away, a 12mm lens was 40 meters away, and a 16mm lens was 60 meters away. Generally, 3.6 - 6mm cameras are within 40 meters, mostly for indoor machines or wide-angle lenses dedicated to the door; 6mm and above are narrow-angle lenses with an effective distance of about 100 meters, and 25mm lenses have an effective distance of about 150 meters. The lens equipped with the high-speed laser cloud platform machine can reach an infrared distance of 300 meters. In addition, it also needed to be considered according to the image effect of the monitoring target on the monitor and the specifications of the CCD. If you need to monitor a relatively close object and have high definition requirements, the effect of a fixed-focus lens may be better than a zoom lens. At the same time, if it is an environment with constant lighting conditions, such as a laboratory, a fixed aperture lens can be used; if the illumination changes are not obvious, a manual aperture lens can be used and a fixed value can be adjusted; if the illumination changes greatly and requires 24-hour outdoor monitoring, an automatic aperture lens should be used. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>