What is a fisheye lens?

Question 1: What is a fisheye lens? What's the role? The fisheye lens is a lens with a very short focal length and a viewing angle close to or equal to180. /kloc-a lens with a focal length of 0/6mm or less. It is an extreme wide-angle lens, and "fisheye lens" is its common name. In order to make the lens reach the maximum photographic angle, the front lens of this kind of photographic lens protrudes to the front of the lens in a parabolic shape, which is quite similar to the fish's eyes, hence the name "fisheye lens". Fisheye lens belongs to a special super wide-angle lens, and its viewing angle strives to reach or exceed the range that human eyes can see. Therefore, the fisheye lens is very different from the real world scene in people's eyes, because the scenery we see in real life is regular and fixed, and the picture effect produced through the fisheye lens is beyond this category.

The role of fisheye lens

The biggest function of fisheye lens is its wide viewing angle, which can generally reach 220 or 230, creating conditions for shooting large-scale scenes at close range; The fisheye lens can produce a very strong perspective effect when shooting close to the subject, emphasizing the contrast between the near big and the far small of the subject, so that the shot picture has a shocking appeal; The fisheye lens has a large depth of field, which is beneficial to show the long depth of field effect of photos. There are two kinds of fisheye lens imaging, one is full of pictures like other lenses; The other imaging is circular. No matter what kind of imaging, the images taken with fisheye lens are quite deformed and have a strong sense of perspective convergence. Therefore, it is often used as a special effect lens, and an arm extending to the fisheye lens will appear twice as long as the original one. For example, Wong Kar-wai's fallen angels (1995) used a lot of fisheye lenses.

Application of fisheye lens;

1. Interesting prospects can have a strong visual impact;

2. The depth of field can range from a few centimeters to infinity;

3. Choose as few lines and faces as possible as the main body; Try to put the subject in the center of the picture when composing, which can minimize distortion;

4. On the contrary, choosing as many horizontal lines and easily recognizable scenes at the edge of the picture can maximize the distortion effect;

5. Pay attention to the edge of the viewfinder when taking a view to see if the photographer's hands, feet, camera belt or the photographer himself are taken into the lens, so as not to affect the artistic effect of the picture;

6. For most fisheye lenses, the common color filters can't be used.

7. Used to make panoramic pictures based on real scenes, which are widely used in publicity and exhibition projects of entertainment, real estate, museums, schools and other institutions. See also Street View function of Google Maps.

Selection of fisheye lens

Question 2: What is a fisheye lens suitable for shooting? Fisheye lens is most suitable for shooting circular scenes, such as amphitheater, square panorama and sky panorama. The shooting range of fisheye lens is extremely large, which can greatly exaggerate the perspective effect of the scene. The picture shot with fisheye lens appears tall, wide and vast. Fisheye lens was originally designed for the needs of celestial photography, but now it is also used to take large-scale panoramic photos or obtain imaginative special effects. The fisheye lens has serious barrel distortion, which sometimes makes the picture look interesting.

Question 3: Is there a difference between a wide-angle lens and a fisheye lens? As the name implies, the fisheye lens is a super wide-angle lens with a viewing angle of 180 like the fisheye lens. Therefore, fisheye glasses have a wider viewing angle than wide-angle glasses, and the phenomenon of peripheral cutting is more serious. Therefore, the horizon can be bent upward or downward according to the shooting angle. When approaching the subject, the ground can be rounded. Fisheye lenses are also different from other lenses in appearance. First of all, the front lens group protrudes outward like a fisheye. In the super wide-angle lens, the front lens group is also protruding, which is the case with the super wide-angle fisheye lens.

Question 4: What does the fisheye function of digital camera mean? What is a fisheye lens? 1. What is a fisheye lens?

Fisheye lens is a special lens with super wide angle, its focal length is extremely short, and its viewing angle is close to or can reach 180 degrees, which is beyond the range that human eyes can see.

Take 135 SLR camera lens as an example. Fisheye lens is a kind of short focal length super wide-angle photographic lens with a focal length of about 6- 16 mm, and "Fisheye lens" is its common name. In order to make the lens reach the maximum shooting angle, the front lens of this kind of photographic lens has a short diameter and a parabolic shape, which is similar to hungry eyes, so it is called fisheye lens.

Second, the use of fisheye lens:

The fisheye lens can produce a strong perspective effect when shooting close to the subject, emphasizing the distance and small contrast of the subject, making the picture shocking and infectious; The fisheye lens has a large depth of field, which is beneficial to show the long depth of field effect of photos. The image shot with fisheye lens has a large deformation and a strong sense of perspective convergence. Connecting the fisheye lens directly to the camera can shoot a distorted and exaggerated effect.

Question 5: What is the difference between a wide-angle lens and a fisheye lens? Wide-angle correction spherical distortion ||||| Fisheye did not correct spherical distortion.

This is the biggest difference.

For the focal length, the wide angle is generally 12-40 (full) fisheye 6- 16.

Question 6: What is the difference between a wide-angle lens and a fisheye lens? The fisheye lens deliberately exaggerates the distortion of the lens, while the ultra-wide angle should try to eliminate the distortion of the lens. The bigger the distortion, the better. The smaller the distortion, the harder it is.

Question 7: What is the difference between a wide-angle lens and a fisheye lens? The fisheye lens belongs to the wide-angle lens group. Generally speaking, a lens with a full-width focal length less than 36mm belongs to a wide-angle lens. However, when the focal length is less than 16mm, the design of the lens will be changed accordingly, such as the front lens protruding from the lens barrel to obtain a wider field of view.

In addition, due to the change of lens design, fisheye lenses usually show barrel distortion in picture deformation, while wide-angle lenses above 16mm are pillow distortion.

Question 8: What's the difference between a fisheye lens and a super wide-angle lens? A lens with a smaller focal length than a standard lens is generally called a wide-angle lens, the extreme of which is a fisheye lens.

Question 9: What is a fisheye lens? A good fisheye lens is a lens with a very short focal length and a viewing angle close to or equal to 280. A lens with a focal length of 2bmm or less can generally be considered as a fisheye lens. It is an extreme wide-angle lens, and "fisheye lens" is its common name. In order to make the lens reach the maximum photographic angle, the front lens of this kind of photographic lens protrudes to the front of the lens in a parabolic shape, which is quite similar to the fish's eyes, hence the name "fisheye lens". Fisheye lens belongs to a special super wide-angle lens, and its viewing angle strives to reach or exceed the range that human eyes can see. Nevertheless, there is still a big difference, because the scenery we see in real life is regular and fixed, and the picture effect produced by fisheye lens is beyond this category. The principle of fisheye lens is well known. The shorter the focal length, the larger the viewing angle and the larger the viewing angle, and the stronger the deformation caused by the optical principle. In order to achieve a super-large viewing angle of 280 degrees, the designers of fisheye lenses have to make sacrifices, that is, to allow this deformation (barrel distortion) to exist reasonably. In this way, except for the scene in the center of the picture, other scenes that should be horizontal or vertical have changed accordingly. It is this strong visual effect that provides an opportunity for imaginative and challenging photographers to show their personal creativity. The role of fisheye lens The biggest role of fisheye lens is its wide viewing angle, which can generally reach 220? Or 2b0? This creates conditions for shooting a wide range of scenery at close range; The fisheye lens can produce a very strong perspective effect when shooting close to the subject, emphasizing the contrast between the near big and the far small of the subject, so that the shot picture has a shocking appeal; The fisheye lens has a large depth of field, which is beneficial to show the long depth of field effect of photos. There are two kinds of fisheye lens imaging, one is full of pictures like other lenses; The other imaging is circular. No matter what kind of imaging, the images taken with fisheye lens are quite deformed and have a strong sense of perspective convergence. So its hunger is used as a special effect lens, and an arm reaching out to the fisheye lens will appear twice as long as before. For example, Wong Kar-wai's fallen angels (299b) used a lot of fisheye lenses. Application of fisheye lens: 2. Interesting prospects can have a strong visual impact; 2. The depth of field can range from a few centimeters to infinity; B, selecting as few lines and faces as possible as subjects; Try to put the subject in the center of the picture when composing, which can minimize distortion; B. On the contrary, choosing as many horizontal lines and easily recognizable scenes at the edge of the picture can maximize the distortion effect; B. Pay attention to the edge of the viewfinder when taking a view to see if the photographer's hands, feet, camera belt or the photographer himself are brought into the lens, so as not to affect the artistic effect of the picture; B. For most fisheye lenses, ordinary color filters cannot be used.

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