Hi all. I need quick advise on this lens with CANON FD mount. How does it perform on m4/3? Is 16mm too long for a fisheye on m4/3? I have no idea but this one is tempting me and have o decide this afternoon when I'll get my other lens. How is IQ etc.? I don't really love fisheyes but this one should not have much distorsion, or am I wrong? What should the angle of view be on m4/3, I mean I already have the m4/3 9-18; will this add something new? I can also get this one:Asahi Pentax 18/11 FISH-EYE-TAKUMAR Thank you all.