lens electrical interface
The common electrical ports of the lens were as follows: 1. ** DC-port **: Most cameras have a 5.5*2.1 DC-plug as the power interface. 5.5 refers to the outer diameter of the power plug of 5.5mm (tolerance: 0.05mm), and 2.1 refers to the inner diameter of the plug of 2.1mm (tolerance: 0.05mm). The power plug was positive inside and negative outside, while the positive and negative poles of the camera interface were the opposite. The inside was negative and the outside was positive. The common specifications of the camera's power supply voltage were 12V and 9V. 2. ** tyrannic-c interface **: For the convenience of power supply in home IPCs (network cameras), the tyrannic-c interface, also known as the usb-c interface, was used. Its power supply specifications were 5v/1A. 3. **PoE interface **: PoE power supply is provided through the 1236 or 4578 cores of the network cable (1236 cores transmit data at the same time). The PoE interface is an ordinary network cable interface, so there is no need to provide a separate DC-interface. PoE power supply is divided into standard PoE power supply and non-standard PoE power supply. The standard PoE is in accordance with the IMEE802.3af, and the device supports 1236 and 4578 power supply methods. The non-standard PoE power supply directly provides 12V, 24V, 48V or 54V power supply parameters. Generally, the power supply and equipment are customized and cannot be used at will. Otherwise, it may cause equipment failure or instability. 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>
The lens interface broke.
If the lens interface broke, he could consider replacing it with a new mount as long as there was no damage inside the lens. For example, for the Pantheon 12 - 60mm/F2.8 - 4.0 lens, the bayonet fixing tube and the lens barrel had signs of being bonded and were easy to break again. In this case, new parts needed to be replaced, and the lens fixing tube was integrated with the zoom ring and the focus ring. It might need to be replaced together to solve the problem. In the case of a broken plastic lens bayonet, the broken part could be removed with a broken wire picker. The specific steps were as follows: determine the size of the part to be removed, select a suitable picker, insert the broken wire picker into the broken part, tighten it clockwise, clamp the rear bayonet of the broken wire picker with a wrench, and rotate the picker counterclockwise to remove the broken part. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Canon lens and Nikon lens interface differences
Canon lenses mainly had the lens mount, which was Canon's full-frame single-lens reflex camera mount, as well as the lens mount, such as the ESF-S mount, the ESF-M mount, and the lens mount. Nikon lenses mainly had the lens mount, such as the F-mount, and the Z-mount. Their bayonet types were different, and their size, the distance between the two sides, the number and location of electronic contacts, and other parameters were also different. These differences determined the compatibility between the lens and the body, as well as the realization of functions. For example, Canon's RF-mount and Nikon's Z-mount were large-caliber mounts, but there were still differences in specific size and other characteristics. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Nikon lens interface contact
The Nikon lens interface contacts played an important role in the communication between the camera and the lens. For example, in a Nikon camera, if there was a problem with the lens interface contact, such as the Nikon Z6ii using too much force when cleaning the camera bayonet contact, the contact might be damaged, resulting in the golden contact not being able to bounce up, causing the signal to not be able to communicate with the lens, and the body would not be able to recognize the lens. Nikon lenses with different mounts were also related to contacts in terms of functions. Nikon lenses had F mount and Z mount. F-mount lens series such as AF-S series had CPU contacts, AF-P series also had CPU contacts, etc. These contacts were related to the lens 'autofocus, anti-shake function, and compatibility with the camera. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Speckles on the lens interface glass
If there were spots on the lens interface glass, it might be dust or stains. If it was dust, when the lens was removed, the camera's light-sensitive element (CCD-based or CMOS-based) would be exposed to the air, and the dust would easily contaminate the lens interface and other parts. For dust, you can use the air blowing (ear washing ball) to blow the dust away. Pay attention to maintaining an appropriate distance and angle when blowing to avoid blowing the dust deeper into the lens. If it was a stain, he had to be extra careful when cleaning because the lens interface was an important part of the signal and power transmission between the camera and the lens. If the stain is light, you can try to wipe it gently with a clean and soft lens cloth, but don't use too much force to avoid scratching the glass. If the stain is stubborn, it is not recommended to deal with it yourself. It is best to send it to a professional camera repair shop for cleaning to avoid damage to the lens interface and affect the normal operation of the camera and lens. <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>
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. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Does the Zeiss lens have a Canon interface?
Yes, Zeiss lenses have lenses with a Leica-port. For example, the ZEiss Distagon T* ZM Leica-port camera lens and many other models have Leica-port Zeiss lenses. <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>