Groups. A fisheye lens is an extra wide-angle lens that generates significant optical distortion and is designed to provide a broad panoramic or hemispherical image. Fisheye lenses have unusually broad field-of-view angles. The result is that the viewer appears to be looking into the lens from all directions, rather than just straight ahead as would be the case with a normal lens.
The fish eye effect makes objects near the edge of the frame appear larger than they actually are. This is because their edges are not visible, so there's nothing for the eye to compare them with. Objects that aren't near the edge of the frame look fine though; it's only those closer to the center that suffer from this problem.
Fish eyes were very common on film cameras from the early 20th century until well into the digital age. They can be used to capture scenes that wouldn't be possible with a normal lens, like taking pictures from high up in a tower or inside a cave. They also allow for some creative photo manipulation techniques, such as distorting the image of one object within the frame to create a visual illusion.
Fish eyes work by projecting everything onto a single circle when light hits the lens. Anything outside of this circle gets cut off, while anything inside fills the entire image plane.
A fisheye lens is similar to a wide-angle lens, but much bigger. Due to the lens's design, the camera produces photos with considerable visual distortion, causing them to look hemispherical or as very wide panoramas. This type of lens is used extensively for landscape photography.
Fisheye lenses are available in many focal lengths, from 16mm to 120mm. They are usually marked with "fisheye" in large letters on one side of the lens. The other side may have some manufacturer's logo or be plain.
The most common use for this lens is taking pictures of landscapes. The visual distortion makes distant objects appear smaller and more near objects seem wider apart. This effect creates images with more impact than those taken with a conventional lens.
In addition to their aesthetic value, fisheye photographs can also be useful for verifying distances to subjects in pictures taken with a regular lens. By measuring the circumference of the earth using software such as Google Earth, you can estimate how far away certain subjects in your photo are relative to the size of the image.
There are several types of fisheye lenses available for different cameras.
A fisheye lens is an exceptionally wide-angle lens with a 180-degree field of view that is used to create panoramic or hemispherical photographs. Robert W. Wood, an American physicist and inventor who likened the effect of a fisheye lens to a fish's underwater world-view, invented the term in 1906.
The effect is similar to that of a very wide angle lens, but instead of being limited to a 40-45 degree field of view, a fisheye lens can capture scenes from 90 degrees up to all around it. This means that there is no point in space where you cannot place your camera without missing something important; you can photograph almost the entire planet this way!
There are two types of fisheye lenses: full circumference (also called "circular") and partial circumference (also called "half-circular"). A full-circle lens captures an image that covers exactly 180 degrees while a half-circle only covers 90 degrees. It is easier to explain with examples. A full-circle photo taken with a 16 mm lens is able to show everything within a 160-degree radius from the center of the frame, while a photo taken with a 24 mm lens can cover 240 degrees.
In photography, a fisheye lens has several advantages over regular wide-angle lenses.