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. Read more exciting novels for free
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>
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. <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
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>
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>
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>
Using a fisheye lens
The concept of the fisheye lens was mainly based on its unique optical properties. The following are some common aspects: ** 1. Use a big perspective ** 1. ** Omnidirectional Shooting ** - In VR panoramic photography, the focal length of the fisheye lens was about 6 - 16 millimeters. The front lens had a short diameter and was protruding in a parabola shape, which was similar to a fisheye. This kind of lens could shoot a wide range of angles. For example, the angle of view could approach or exceed 180 degrees, and some could reach 220 degrees or 230 degrees. This feature could be used to create a 360° panoramic image with fewer photos, saving time and improving work efficiency. It could also save costs, reduce production costs, and improve product quality. - When shooting minimalist scenes such as shorelines and deserts, aim the camera at the horizon and keep the camera angle flat to capture the big scene. At the same time, try to avoid placing objects at the edge of the frame to avoid distortion, unless post-processing correction. 2. ** Shooting in a small space ** - Due to its large angle of view, it could accommodate more scenes in a small space and adapt to the shooting needs of a small space. 3. ** emphasize the elements of the scene ** - It could emphasize the lines in the picture. For example, in architectural photography, it could combine the elements behind it and use its transformation effect to compose a composition, emphasizing the lines in the building and creating a unique architectural photo effect. ** 2. Use the Distortion Effect ** 1. ** Close Shot ** - When shooting at a close distance, the fisheye lens could create a very strong perspective effect, emphasizing the contrast between the near and far objects, making the captured image have a shocking appeal. For example, when shooting a portrait, approaching the model could make a part of the character (such as the eyes or hands reaching out to the camera) appear particularly large, or when shooting still life, it could also increase the interest of the picture. However, when shooting a portrait, one had to ensure that the result was acceptable to the subject. - When shooting some of the texture of the background, such as the close-up of the waves and the beach, the horizon can be clearly curved to create a unique visual effect. 2. ** Creation Transformation ** - Distorting the horizon by pointing the camera at the ground or the sky, causing the horizon to curve up or down. When aiming at the ground, make sure the background is attractive enough; when aiming at the sky, shoot when the sky is full of drama. - When shooting a portrait, you can also distort the appearance of the character to obtain interesting effects, or emphasize the buildings around the model, making the character smaller in the picture and surrounded by buildings. ** 3. Use the long depth of field feature ** - The fisheye lens had a relatively long depth of field, which was good for expressing the long depth of field effect of photos. This feature could be fully utilized when shooting scenes that required a long depth of field effect. ** 4. Concepts related to special shooting techniques ** 1. ** The camera moves during exposure ** - You can deliberately move the camera, such as moving the camera during exposure. During the day, the exposure time was about 1/15 second. At night, when using a tripod, you could even try a longer exposure. Hand-held shooting could produce a radial-blurring effect (rotating the camera around an imaginary center point, maintaining the stability of the camera during rotation). Using a tripod to shoot a similar moving light effect (rotating the camera to the head of the tripod) was also a creative shooting concept. 2. ** Shooting distance control ** - Pay attention to the shooting distance, because close-up shooting can make the distortion effect of the fisheye lens more obvious. The closer you are, the more exaggerated the effect. For portrait photography, the closer the distance, the more obvious the effect of the "big-headed dog". This technique could also be applied to still life photos. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single lens reflex fisheye lens tripod
In photography, a single-lens reflex, a fisheye lens, and a tripod were all important pieces of equipment. ** 1. DSLR camera ** A single-lens reflex camera was a traditional and commonly used photographic equipment. It had the feature of an interchangeable lens, which allowed it to adapt to different shooting scenes and needs. ** 2. Fisheye lens ** 1. ** Specialties ** - The fisheye lens had a very wide angle of view and could accommodate more image content. It was very useful when taking panoramic shots or when it was necessary to show grand scenes (such as landscapes, large buildings, etc.), which could greatly speed up panoramic shots. - Fish-eye lenses were divided into full-frame and half-frame lenses. The lenses of different frames needed to be matched with the camera of the corresponding frame. For example, a full-frame camera could be matched with a full-frame Canon 8 - 15mm full-frame fisheye lens with an EF-mount; a half-frame camera could be matched with a Sanyang SAMYANG EF-mount 8-mm half-frame fisheye lens from the sub-factory. - The difference in lens prices was large. Canon and Nikon's original fisheye lenses might cost tens of thousands, while the 8mm fisheye lens of SAMYANG was relatively more cost-effective. 2. ** On a single-lens reflex camera ** - The single-lens reflex camera could achieve special shooting effects by changing the matching fisheye lens. When the fisheye lens was installed, the camera could take photos or videos with a strong visual impact and obvious bending and distortion at the edge of the picture, bringing a unique artistic expression to photography. ** Tripod ** 1. ** Type and characteristics ** - There were many types of tripods to choose from on the market, such as some tripod products from Fotopro, including the M4C desktop tripod (suitable for micro single-lens reflex camera photography scenery, climbing stairs, macro, etc., small and portable), the M - 4C Pro carbon fiber tripod (camera climbing stairs small and portable, with dual panoramic head, suitable for micro single-lens reflex camera tripod small dual panoramic head macro photography), etc. There were also Manfrotto related products, such as the 405 single-lens reflex tripod gear head (suitable for fine-tuning macro panoramic, made of aluminum alloy, used for still life/architectural gear three-dimensional three-dimensional head photography stability). - Different tripods had different load bearing, height, and maneuverability. For example, some tripods had a height of more than 100 centimeters, a stable load of 10 kilograms, and a sturdy material. Even in slanted terrain or windy environments, they could stably set up the camera. They could also be used to switch between vertical and horizontal shots through the central axis. They were equipped with a 360-degree rotating head to adjust the shooting angle. They might also have a retro hand-cranked central axis, a foldable portable frame, a self-contained Bluetooth selfie, and other functions. 2. ** Cooperate with DSLR and Fisheye lenses ** - When shooting with a fisheye lens and a single-lens reflex camera, the tripod provided a stable support. Since the fisheye lens may require a long exposure time (such as taking a panoramic shot in a low-light environment) or precise composition (to make full use of its wide viewing angle), the tripod can avoid shaking due to hand-held shooting, ensuring the clarity and accuracy of the shot. Especially in scenes that required high precision such as VR panoramic shots, a stable tripod was an indispensable equipment. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Canon single-lens reflex fisheye lens
Canon had a wide range of products in the field of fisheye lenses. In the early days of the FO era, the FO 7.5mm f/5.6 S.S.C. circular fisheye lens and the FO 15mm f/2.8 S.S.C. diagonal fisheye lens were introduced. Among them, the FO 15mm f/2.8 S.S.C. was the fisheye lens with the largest aperture at that time. At the beginning of the launch, the EF15mm f/2.8 fisheye lens was introduced. It used an AFD arc motor to drive the focus. The straightness of the central part of the image and the distortion around it caused an extremely exaggerated image effect. This lens lasted for 23 years. According to the current DSLR image quality requirements, it was insufficient. Moreover, the EOS system lacked a circular fisheye lens at that time. In 2024, Sima released a 15mm F1.4 diagonal fisheye lens. In addition, Canon once launched the RF5.2mm F2.8L Dual FISHEYE full-frame radio frequency lens in the 3D VR system for 3D VR image production on October 12,2021. It uses a double-fisheye lens layout and can shoot 3D images with a baseline disparity of 60mm between the two lenses. The recommended retail price is 14399 yuan. At the "CP+2024" camera exhibition, which opened on February 22, 2024 local time, Canon showed off its VR lens series. One of them was a lens that combined two fisheye lenses. Canon planned to launch this lens as early as this year. The price was less than 100,000 yen. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>