don't even consider the baby death, unless you are gonna get a custom step down ring to get rid of the vig. You have to shave off some of the threads on the ring.
the fce9, you don't have to mod at all, all you have to do is out on a step down ring. you see, the fce9 is ment to be zoomed, so you can zoom through all the vig and the footy will be fine. also the fce9 isn't made anymore, so finding one might be a challenge.
and if you have seen the new 43mm lens, there is an alot of distortion, the only issue i have with it is the vig on the right side. but that can be fixed with a little zooming.