First cheap solution to have a full frame fisheye on APS-c DSLR. Was sold with a variety of names, including Bower, Falcon, Walimex, Dorr, Rokinon, Vivitar (with upgraded aesthetics).
Shaving the hood was a good solution to get the whole 360 done in 4 shots or 3, so… first a THANKYOU to Michel Thoby who did all the type of measurements and all scientific tests about the lens, and the first shave. 🙂 Here the summary. http://michel.thoby.free.fr/SAMYANG/Early%20test%20report.html