It's convenient to buy a lens with the interface
To a certain extent, the interface could indeed bring convenience to the purchase of lenses. For example, in the field of camera lenses, lenses with different bayonet couldn't be directly used on other bayonet cameras, but with the interface, such as the Nikon Z-mount camera could use the Fuji X-mount lens through a specific interface ring, and the Nikon F-mount lens could be used on the Sony-E-mount camera. This expanded the range of lens choices. The user did not have to be limited to the lens of the original bayonet of the camera. They could choose a variety of lenses according to their own needs, such as the optical quality of different brands of lenses, cost-performance ratio, etc. However, there may be some problems with the use of the interface, such as some functions may not be realized, or there may be some compatibility flaws in focusing, imaging, and so on. Read more exciting novels for free
The smallest lens interface
Among the mentioned micro-single lens mounts, the diameter of the Sony-E mount was 46mm, the Nikon Z-mount was 55mm, and the Pantheon M4/3 mount was mainly used for Olympus mirrorless cameras. The diameter was not mentioned, but from the overall comparison, the Sony-E mount had a relatively small diameter, so the Sony-E mount was probably the smallest of these micro-single lens mounts. However, he could not rule out the possibility that there were other unmentioned micro-single-lens mounts with smaller size. <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>
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. <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>
The lens crushed the interface
If the lens crushed the interface, the first thing to do was to check if the lens was damaged. If there is no damage inside the lens, you can consider replacing it with a new interface. For example, if the mounting tube and the lens barrel of the Pantheon 12 - 60mm/F2.8 - 4.0 lens were broken, the mounting tube, the zoom ring, and the focus ring were integrated, and they needed to be replaced together to solve the problem. During maintenance, attention should be paid to avoiding simple and unstable maintenance methods such as simple glue to avoid secondary damage to the lens, and new parts should be used. If you are not sure how to operate it or lack relevant experience, it is recommended to seek the help of professional maintenance personnel. <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>
Olympus travel convenient lens
If one considered the Olympus lens from the perspective of travel convenience, a lens with an equivalent 35mm focal length was more practical for travel users. For example, the Olympus 171.8 lens had an equivalent focal length of 34mm for the full frame. The 1.8 aperture light was acceptable, and it was one of the few lenses that could be balanced on the Zhiyun M2 Stabilizer. It was suitable for scenes such as sweeping the streets at night. In addition, lenses starting from 24mm were also more suitable for viewing angles, such as Olympus '12 - 40 lens, which was equivalent to a full-frame 24 - 80 lens. It could meet a variety of needs in travel photography. There were also telephoto lenses such as the 751.8 M43 lens, which had an equivalent focal length of 150mm. Although the telephoto lens did not capture many pictures during the journey, it could bring a sense of space compression, which could be used to shoot portraits and scenery. In addition, the Olympus M. ZD150 - 400mm f4.5IS TC1.25x Pro lens could reach 0.7x when the built-in zoom lens was turned on, which was more suitable for macro shooting. It also had 7.5 level anti-shake for hand-held shooting. However, the combination of this lens and the EM1X camera looked larger and heavier, but it was actually lighter. <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 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>
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>