Fisheye lens
The front lens of this photographic lens has a large diameter and protrudes toward the front of the lens in a parabolic shape, quite similar to a fish eye, hence the name 'fisheye lens'. The biggest effect of a fisheye lens is its large field of view, generally reaching 220 degrees or 230 degrees, which creates conditions for shooting large-range scenes at close range; a fisheye lens can create a very strong perspective effect when shooting close to the subject, emphasizing the contrast of near-large and far-small of the subject, giving the captured picture a shocking appeal; a fisheye lens has a fairly long depth of field, which is conducive to expressing the long-depth-of-field effect of photos.
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