Well, Peleng is quite popular in Russia. Less popular than Zenitar but it is much more special. Take a look at russian fish-eye community for samples:
RU_FISHEYE
for Peleng search cyrillic string "Пеленг" (CAPS) or "пеленг". Just copy the string and search the pages.
here is another set of shots with Peleng, duplicating a bit:
More Peleng
Its a special lens 'cause it gives a full 180 angle at FF. Corners of film, or even APS matrix will be black.
Peleng comes with M42, Nikon or Canon adaptors. Which one could be bought outside the country, really not sure.
Some tech data:
resolves 55 lines per mm in the center, 15 at the border
minimal distance is 0.3 m
weight is 400 gr