I get the rants about distortion.
This lense is 180 degree diagonal...non rectilinear so it is expected to bend like a banana,
Most circumstances I would go for a medium telephoto, in order to eliminate perspective distortion but this was the look my friend wanted.
.....In this such case he was the client...what the client wants the client gets!!!!
I think every lense has its place, as long as you know how to use each one to its best advantage....afterall it is all about experimenting and having fun....and its FREE.
Still stumped about my so called "dirty" sensor???.....I have 10 x 15 prints next to me and still can't spot what Clart is on about....anyone else see it in pic 9??
Here is a good bedtime read if you are bored, it might explain why your Oly 8mm differs to what I am using.
http://photo.net/learn/fisheye/