The angle of view of a fisheye lens is several times larger than that of an ordinary lens
The angle of view of an ordinary lens was generally around 50°-75 °, while the angle of view of a fisheye lens was close to or equal to 180°. However, it was difficult to simply say that the angle of view of a fisheye lens was several times larger than that of an ordinary lens because different ordinary lenses had different angles of view. Roughly speaking, if the angle of view of an ordinary lens was 60°, the angle of view of a fisheye lens was close to three times that of an ordinary lens. Read more exciting novels for free
What is the angle of the fisheye lens?
The fisheye lens was an extreme wide-angle lens with an angle of 180 - 270 degrees. However, in engineering, lenses with a viewing angle of more than 140 degrees were collectively referred to as fisheye lenses. In reality, there were also lenses with a viewing angle of more than 270 degrees. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Fisheye lens night view
The fisheye lens had its unique performance and application in night scenes. The fisheye lens had a wide angle of view, some of which could reach 180 degrees or even more, allowing it to capture a very wide scene when shooting at night. The images captured by the camera had a distortion feature. This feature could turn a normal straight line into a curve, resulting in interesting visual effects. For example, the city at night was shot into an effect similar to "Earth's night scene." However, using a fisheye lens to capture night scenes also had some challenges. For example, some fisheye lenses had a fixed aperture (such as the Rock Star 10mmF8 fisheye lens). If you didn't have a tripod to help you shoot at night, increasing the USB to ensure enough light would bring more noise. In order to overcome the problem of shooting at night and to bring out the creative effect of the fisheye lens, some equipment used a variety of technical means. For example, the iQOO 9 Pro's 50-million-pel 150-degree fish-eye ultra-wide angle lens had excellent performance in dark light imaging. Its main camera had a large base pan head and high resolution, which helped capture rich details. The sensor had excellent dark light sensitivity. The lens used special coating and various algorithms to suppress noise, improve ghostly shadows and glare. It also provided special fish-eye effect modes such as crystal balls and asteroids, adding creativity and fun to shooting night scenes. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Take a panoramic view with a fisheye lens
Here are some key points to using a fisheye lens to capture a panoramic view: 1. * * Filming preparation ** - * * Understand the lens parameters **: Before shooting, you must understand the meaning of the buttons and parameters on the fisheye lens. This will help you operate the lens better. - * * Choose the appropriate fisheye lens type **: There are two types of fisheye lenses: Circular Image Fisheye and Full frame Fisheye. You can choose according to your needs. - * * Confirm the number of shots **: Theoretically, 2 complete full-circle fisheye images can be used to stitch the panoramic view, but the stitching quality may be affected; 3 images can produce good overlap; 4 - 6 images have a larger and more stable overlap range, and 6 of them are more popular. For circular fish-eye images, 3 diagonally cropped circular fish-eye images can get good overlap, 4 vertically cropped circular fish-eye images are enough, and 5 images may be better but less used. - * * Adjusting nodes (Disregard almost)**: Fisheye lenses have strict requirements for "Disregard almost". It is best to control the positive and negative errors within 1 mm. There may be more than one "Disregard almost", which can be solved by increasing the overlap rate. For zooming fisheye lenses, you need to accurately find the "Disregard almost" of each focal length. - * * Consider the control points **: The automatic mosaic panoramic software may not be able to find the control points that are completely suitable for fisheye lens stitching. Generally, the control points are gathered in a small area. There may be no control points in a large area. It is safer to set the control points manually, and it can achieve better stitching without many control points. 2. * * Filming process ** - * * In terms of composition ** - * * Center the subject **: Place the subject in the center of the image and try to get the fisheye lens close to the subject. - * * Horizon processing **: Place the horizon in the middle of the image and try to keep it parallel. - * * Covering content **: Make sure that all the content that needs to be captured is covered within the circular image. Pay attention to the selection of images at the edges to highlight the visual tension of the circular image. - * * Shooting angle ** - * * Low-angle shooting (for 360-degree fisheye lens panoramic shooting)**: A relatively low viewing angle is more suitable for fisheye lens shooting, which can magnify the advantages of fisheye lens shooting. - * * Close Range Focus (for 360-degree fisheye lens panoramic shooting)**: A good fisheye lens can achieve a focus distance of 2.5 - 5 cm. The close object will be magnified while the distant object will be scattered. It can produce a "3D effect." - * * Slow shutter speed (for 360-degree fisheye lens panoramic shots)** - * * Light Control ** - * * Choosing the shooting time **: You need to pay special attention to the time period when shooting indoors, because the light has a great impact on the finished product of the panoramic work. - * * Additional lighting measures **: If the indoor lighting and fixed light source cannot meet the shooting requirements, you can use a reflective board or other supplementary lighting methods. - * * Avoiding Reflective Items **: Pay attention to avoiding mirrors, glass, and other objects that reflect the scenery. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
About the VR super wide-angle fisheye lens
The VR super wide-angle fisheye lens had many features and advantages. In terms of shooting efficiency, it had a wide range of angles of view when taking photos. Compared to wide-angle lenses, it could stitch a complete panoramic image with fewer photos, thus shortening the shooting time. For example, when shooting a large area of scenery, the wide-angle lens had a limited angle of view and many pictures were taken. The post-stitching process was inconvenient and the production was slow, but the fisheye lens could effectively avoid this problem. In terms of cost, the fisheye lens could shoot a panoramic image. A certain number of full-circle fisheye images (such as two, three, etc., multiple overlapping images could improve the quality) could meet the demand, which could save production costs and make post-production convenient and fast. In terms of quality, although there were inevitable interference factors during VR panoramic shooting, there would not be too many ghosts and obvious seams when using the fisheye lens for post-stitching. When shooting a point in the VR panoramic view, the fixed-focus fisheye lens was used. The node was fixed, and the pan head could be adjusted once. There was no need to adjust it repeatedly, which could save shooting time and improve efficiency. There were also many VR super wide-angle fisheye lens products on the market. For example, SIGMA15mm F1.4DG DG Diagonal Fisheye developed by SIGMA-SKK.| Art was a fisheye lens with an ultra-wide angle and powerful fisheye distortion function launched in 2024. The maximum aperture was F1.4, and the resolution of the imaging area was highly consistent. The Entaniya Fisheye HAL 220PL fisheye lens released by Entaniya's headquarters in Tokyo, Japan, had a maximum field of view of 220 degrees. It was the world's largest fisheye lens with a PL mount. The size of the image circle could be changed, and it had a unique advantage in VR filming. For example, it could allow video cameras to shoot motion pictures similar to motion cameras and improve the quality of motion pictures. It could also greatly reduce the number of equipment used during filming. It was also the top lens in the Entaniya HAL series. It was widely used for high-end VR content shooting and production. In addition, there were lenses from the Luying brand, which had a shooting angle of 222 degrees and a price of 21.50 yuan (starting from 1 piece). They had certain specifications, such as processing and custom-made, fixed-focus lenses, and so on. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Fisheye lens
A fisheye lens was a lens with a focal length of about 6 - 16mm and a viewing angle close to or equal to 180°. It was a type of ultra-wide-angle lens. Its front lens was shaped like a parabola and protruded to the front of the lens. It had a wide angle of view and was similar to the eyes of a fish, hence its name. It usually consists of a front group of imaging lenses and a rear group of correction lenses, and is divided into two types of half-frame fisheye lenses and full-frame fisheye lenses. It was first used in photography to create artistic photos with a large field of view and large distortion. It was also widely used in fields that required wide-angle imaging, such as surveillance, dome imaging, aerospace cameras, and other industrial, medical, and scientific research fields. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Introduction to the wide-angle macro fisheye lens of mobile phones
There were many types of mobile phone wide-angle macro fisheye lenses with different characteristics. 1. Wide-angle lens 1. ** View and Focus ** - Ordinary wide-angle lenses usually had a focal length of 24 - 38mm and a viewing angle of 60° - 84°. The focal length of the ultra-wide-angle lens was generally 13 - 20mm, and the angle of view was 94° - 118°. There was also a high-definition, distortion-free, wide-angle 18mm lens. 2. ** Function Effect ** - The visual angle was large and the field of vision was wide. The range of the scenery observed from a certain point of view was much larger than the range seen by the human eye at the same point of view. Moreover, the depth of field was large and could clearly show a wide visual range. Second, macro lens 1. ** Function and features ** - Not only could it fully display the details, but it could also be used as an ordinary fixed-focus lens. It would be used when the photographer needed to portray the details or texture in the picture. Compared to other lenses, the macro lens had a very short focusing distance and could get closer to the subject, thus obtaining a size. For example, there were 2.8x macro lenses, professional zoom macro lenses, and other different specifications. 2. ** Usage scenario ** - It was very useful when shooting objects that needed to show details, such as small insects, floral patterns, and so on. 3. Fisheye lens 1. ** View and Focus ** - The focal length was extremely short, and the angle of view was close to or reached 180°, which was beyond the range of what the human eye could see. The focal length of the fisheye lens of a DSLR camera was generally 6 - 16mm. There were similar fisheye lenses in mobile phone lenses, such as 198-degree fisheye lenses. 2. ** Effect presented ** - It gave the photo an exaggerated and distorted effect, similar to a distorting mirror, full of personality and visual impact. In addition, there were also wide-angle, macro, and fish-eye three-in-one mobile phone lens sets on the market, such as the Suo Yun mobile phone lens and the Criacr 9-in-1 lens kit. These lenses could meet different shooting needs and provide more creativity and shooting possibilities for mobile photography. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Fisheye lens drone
Fisheye lenses could be used in drones. For example, LAOWa has a 4mm F2.8 210° circular fun fisheye lens that can be used for drone aerial photography, suitable for a variety of camera mounts such as Fuji micro-single X mount, Sony micro-single E mount, etc.; Chuangan Optoelectronics developed a 0.7mm, F2.8, 210° M8 fisheye lens, which was successfully applied to the visual obstacle avoidance of drones. By installing this lens in four directions, it could achieve no dead angle image acquisition. The image could be processed to give movement instructions to bypass obstacles. It could cruise automatically with the satellite positioning system and cooperate with the ground station for image big data analysis. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Nikon fisheye lens
Wesley fisheye lens
It was mentioned in the reference materials that an 8mm fisheye lens called "Wesley" was used for photography. It was used in conjunction with the Fuji X-T10, with an aperture of f/2.8, a single exposure of 1 minute. In addition, a 7.5mm fisheye lens named "Wesley" was mentioned for fisheye photography. However, there was no more detailed technical parameters or special design information about the Wesley fisheye lens. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Like a fisheye lens
There were super wide-angle lenses that were similar to fisheye lenses. Fisheye lens was a type of ultra-wide-angle lens. Its focal length was about 6 - 16mm and the angle of view was close to or equal to 180°. The front lens was a parabolic shape that protruded to the front of the lens, creating artistic photos with a large field of view and large distortion. It was widely used in surveillance, dome imaging, aerospace cameras and other fields that required wide-angle imaging. It was mostly used in industrial, medical, scientific research and other fields. The ultra-wide angle lens also had a larger angle of view and could cover a wider scene. It was more commonly used when shooting landscapes, buildings, and other subjects that needed to show a wide sense of space, but its angle of view and distortion were usually not as extreme as the fisheye lens. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>