John_B
Grasshopper
Well I just got an email that pointed out that camera doesn't work with that housing. (Edit: And Nem confirmed it.)As a fellow Canon user (A720) who is planning on upgrading her Canon housing to an Ikelite and adding a strobe, I hope you don't mind me jumping in here while we both wait for Nemrod.
Why is it you're considering the Canon housing with a converter rather than an Ikelite housing, for example? Are Ikelite housings only compatible with Ikelite WA lenses? And any other lens only compatible with a housing of the same manufacturer for that matter? (I'm not planning on an WA lens at this time, but this is good information and maybe one day I can afford to change my mind.)
Near as I've been able to figure out, the Ikelite housing with adapter for the INON bayonet system with the INON "fisheye" wide angle lens is going to vignette (dark corners) unless you zoom out which defeats the whole point of having a wide angle lens. And as Nem has previously pointed out, the Ikelite W-20 isn't actually wide angle at all.
As expensive as it may get, I'm not convinced that the dSLR route isn't a better approach in the long run for WA. I wonder what sort of FOV I'd get with an XSi and the EF-S 10-22mm (16-35mm effective) and the Ikelite with the 8" dome? Or the EF 15mm Fisheye (24mm effective)?
Edit: I'll have to check out the Tokina lenses...