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Old 2019-07-02, 14:44   #6
Dr Sardonicus
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Feb 2017

536810 Posts

Originally Posted by jasong View Post
Are you claiming different cameras can fisheye differently
No. I'm claiming that no camera (with a single aperture and focal plane) gives an image that can tell you how far away anything actually is. You need more information. If there's something in the image whose actual size is known, you can do stuff. Without that sort of information, the picture won't tell you if it's showing a tiny object nearby or a large object far away. An example of the mischief that can be caused by this ambiguity may be seen here.

If you are instead concerned with undoing the distortions caused by a lens, then as already indicated by other posters, it depends on the specific lens. I suggest a Google search with parameters

"fisheye lens correction"
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