Best Fish Eye or WA Lens for RX100

[AlMitch]

mmmm I really should have done a tiny bit more research before I got the G11. It has served me well to date but now I want a little more. I'm kicking myself for not getting the S95 back then. Because then at least I could still build on the system.
OH well you live and learn.
So I'll just have to grin and bear it untill I sell a kidney for the Sony.

 

[bentax]

so were i to go the fix 2852 or the uwl 04 route, the stepdown adapter that will be sent from most stores is not the correct fitting needed to stop vignetting?