Fisheye distortion docstring #2185

Job	Run time
integration (macos-latest, Debug, true, x64)	14m 1s
integration (macos-latest, Debug, false, x64)	14m 34s
build (macos-latest, 3.10.x)	27m 38s
tidy	8m 26s
integration (macos-latest, Release, true, x64)	17m 12s
build (macos-latest)	22m 1s
style	1m 11s
integration (macos-latest, Release, false, x64)	11m 39s
build (windows-latest)	24m 22s
integration (windows-latest, Debug, true, x64)	23m 26s
build (ubuntu-latest, 3.10.x)	9m 46s
build (ubuntu-latest)	9m 36s
integration (windows-latest, Debug, false, x64)	23m 14s
integration (windows-latest, Release, true, x64)	26m 6s
integration (windows-latest, Release, false, x64)	25m 46s
integration (ubuntu-latest, Debug, true, x64)	5m 24s
integration (ubuntu-latest, Debug, false, x64)	4m 23s
integration (ubuntu-latest, Release, true, x64)	4m 33s
integration (ubuntu-latest, Release, false, x64)	6m 15s
integration (Win32, windows-latest, true, Debug)	23m 17s
integration (Win32, windows-latest, true, Release)	23m 58s
release	0s
	5h 26m 48s

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