Interesting, it does a barrel distortion which is something of a problem with the S90/S95 lens anyways, it is software corrected normally. It does not however increase FOV, when I think of fish eye effect I am thinking angle of view plus the inherent barrel distortion that comes from a fish eye lens.
Hmm, I don't see that in mine, maybe look again.
N
Actually, if you use Canon's software, the field of view is less than if you use, say light room or PSP...at least at 28 or 35mm (not tested the others)... so if you turn off the lens correction, it would give you a wider field of view...way to turn a problem into a plus.